Articles | Volume 12, issue 4
https://doi.org/10.5194/cp-12-981-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Special issue:
https://doi.org/10.5194/cp-12-981-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
15 Apr 2016
Research article |
| 15 Apr 2016
Major perturbations in the global carbon cycle and photosymbiont-bearing planktic foraminifera during the early Eocene
Valeria Luciani
CORRESPONDING AUTHOR
Department of Physics and Earth Sciences, Ferrara University, Polo
Scientifico Tecnologico, Via G. Saragat 1, 44100 Ferrara, Italy
Gerald R. Dickens
Department of Geological Sciences, Stockholm University, 10691
Stockholm, Sweden
Department of Earth Science, Rice University, Houston, TX 77005, USA
Jan Backman
Department of Geological Sciences, Stockholm University, 10691
Stockholm, Sweden
Eliana Fornaciari
Department of Geosciences, Padova University, Via G. Gradenigo 6,
35131 Padova, Italy
Luca Giusberti
Department of Geosciences, Padova University, Via G. Gradenigo 6,
35131 Padova, Italy
Claudia Agnini
Department of Geosciences, Padova University, Via G. Gradenigo 6,
35131 Padova, Italy
Roberta D'Onofrio
Department of Physics and Earth Sciences, Ferrara University, Polo
Scientifico Tecnologico, Via G. Saragat 1, 44100 Ferrara, Italy
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Chris D. Fokkema, Tobias Agterhuis, Danielle Gerritsma, Myrthe de Goeij, Xiaoqing Liu, Pauline de Regt, Addison Rice, Laurens Vennema, Claudia Agnini, Peter K. Bijl, Joost Frieling, Matthew Huber, Francien Peterse, and Appy Sluijs
Clim. Past, 20, 1303–1325, https://doi.org/10.5194/cp-20-1303-2024, https://doi.org/10.5194/cp-20-1303-2024, 2024
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Polar amplification (PA) is a key uncertainty in climate projections. The factors that dominantly control PA are difficult to separate. Here we provide an estimate for the non-ice-related PA by reconstructing tropical ocean temperature variability from the ice-free early Eocene, which we compare to deep-ocean-derived high-latitude temperature variability across short-lived warming periods. We find a PA factor of 1.7–2.3 on 20 kyr timescales, which is somewhat larger than model estimates.
Maria Elena Gastaldello, Claudia Agnini, and Laia Alegret
J. Micropalaeontol., 43, 1–35, https://doi.org/10.5194/jm-43-1-2024, https://doi.org/10.5194/jm-43-1-2024, 2024
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This paper examines benthic foraminifera, single-celled organisms, at Integrated Ocean Drilling Program Site U1506 in the Tasman Sea from the Late Miocene to the Early Pliocene (between 7.4 to 4.5 million years ago). We described and illustrated the 36 most common species; analysed the past ocean depth of the site; and investigated the environmental conditions at the seafloor during the Biogenic Bloom phenomenon, a global phase of high marine primary productivity.
Claudia Agnini, Martha G. Pamato, Gabriella Salviulo, Kim A. Barchi, and Fabrizio Nestola
Adv. Geosci., 53, 155–167, https://doi.org/10.5194/adgeo-53-155-2020, https://doi.org/10.5194/adgeo-53-155-2020, 2020
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This work provides updated scenario on the underrepresentation of women in the Italian university system in the area of geosciences in the last two decades. Data highlight an increase in the number of female full and associate professors whereas the low number of female non-permanent researchers raises strong concerns. Over different areas of geosciences, Paleontology represents the only field in which the gap is filled whereas all the other disciplines suffer a gender imbalance.
Christopher J. Hollis, Tom Dunkley Jones, Eleni Anagnostou, Peter K. Bijl, Marlow Julius Cramwinckel, Ying Cui, Gerald R. Dickens, Kirsty M. Edgar, Yvette Eley, David Evans, Gavin L. Foster, Joost Frieling, Gordon N. Inglis, Elizabeth M. Kennedy, Reinhard Kozdon, Vittoria Lauretano, Caroline H. Lear, Kate Littler, Lucas Lourens, A. Nele Meckler, B. David A. Naafs, Heiko Pälike, Richard D. Pancost, Paul N. Pearson, Ursula Röhl, Dana L. Royer, Ulrich Salzmann, Brian A. Schubert, Hannu Seebeck, Appy Sluijs, Robert P. Speijer, Peter Stassen, Jessica Tierney, Aradhna Tripati, Bridget Wade, Thomas Westerhold, Caitlyn Witkowski, James C. Zachos, Yi Ge Zhang, Matthew Huber, and Daniel J. Lunt
Geosci. Model Dev., 12, 3149–3206, https://doi.org/10.5194/gmd-12-3149-2019, https://doi.org/10.5194/gmd-12-3149-2019, 2019
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The Deep-Time Model Intercomparison Project (DeepMIP) is a model–data intercomparison of the early Eocene (around 55 million years ago), the last time that Earth's atmospheric CO2 concentrations exceeded 1000 ppm. Previously, we outlined the experimental design for climate model simulations. Here, we outline the methods used for compilation and analysis of climate proxy data. The resulting climate
atlaswill provide insights into the mechanisms that control past warm climate states.
Robert McKay, Neville Exon, Dietmar Müller, Karsten Gohl, Michael Gurnis, Amelia Shevenell, Stuart Henrys, Fumio Inagaki, Dhananjai Pandey, Jessica Whiteside, Tina van de Flierdt, Tim Naish, Verena Heuer, Yuki Morono, Millard Coffin, Marguerite Godard, Laura Wallace, Shuichi Kodaira, Peter Bijl, Julien Collot, Gerald Dickens, Brandon Dugan, Ann G. Dunlea, Ron Hackney, Minoru Ikehara, Martin Jutzeler, Lisa McNeill, Sushant Naik, Taryn Noble, Bradley Opdyke, Ingo Pecher, Lowell Stott, Gabriele Uenzelmann-Neben, Yatheesh Vadakkeykath, and Ulrich G. Wortmann
Sci. Dril., 24, 61–70, https://doi.org/10.5194/sd-24-61-2018, https://doi.org/10.5194/sd-24-61-2018, 2018
Matt O'Regan, Jan Backman, Natalia Barrientos, Thomas M. Cronin, Laura Gemery, Nina Kirchner, Larry A. Mayer, Johan Nilsson, Riko Noormets, Christof Pearce, Igor Semiletov, Christian Stranne, and Martin Jakobsson
Clim. Past, 13, 1269–1284, https://doi.org/10.5194/cp-13-1269-2017, https://doi.org/10.5194/cp-13-1269-2017, 2017
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Past glacial activity on the East Siberian continental margin is poorly known, partly due to the lack of geomorphological evidence. Here we present geophysical mapping and sediment coring data from the East Siberian shelf and slope revealing the presence of a glacially excavated cross-shelf trough reaching to the continental shelf edge north of the De Long Islands. The data provide direct evidence for extensive glacial activity on the Siberian shelf that predates the Last Glacial Maximum.
Thomas Westerhold, Ursula Röhl, Thomas Frederichs, Claudia Agnini, Isabella Raffi, James C. Zachos, and Roy H. Wilkens
Clim. Past, 13, 1129–1152, https://doi.org/10.5194/cp-13-1129-2017, https://doi.org/10.5194/cp-13-1129-2017, 2017
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We assembled a very accurate geological timescale from the interval 47.8 to 56.0 million years ago, also known as the Ypresian stage. We used cyclic variations in the data caused by periodic changes in Earthäs orbit around the sun as a metronome for timescale construction. Our new data compilation provides the first geological evidence for chaos in the long-term behavior of planetary orbits in the solar system, as postulated almost 30 years ago, and a possible link to plate tectonics events.
Martin Jakobsson, Christof Pearce, Thomas M. Cronin, Jan Backman, Leif G. Anderson, Natalia Barrientos, Göran Björk, Helen Coxall, Agatha de Boer, Larry A. Mayer, Carl-Magnus Mörth, Johan Nilsson, Jayne E. Rattray, Christian Stranne, Igor Semiletov, and Matt O'Regan
Clim. Past, 13, 991–1005, https://doi.org/10.5194/cp-13-991-2017, https://doi.org/10.5194/cp-13-991-2017, 2017
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The Arctic and Pacific oceans are connected by the presently ~53 m deep Bering Strait. During the last glacial period when the sea level was lower than today, the Bering Strait was exposed. Humans and animals could then migrate between Asia and North America across the formed land bridge. From analyses of sediment cores and geophysical mapping data from Herald Canyon north of the Bering Strait, we show that the land bridge was flooded about 11 000 years ago.
Clint M. Miller, Gerald R. Dickens, Martin Jakobsson, Carina Johansson, Andrey Koshurnikov, Matt O'Regan, Francesco Muschitiello, Christian Stranne, and Carl-Magnus Mörth
Biogeosciences, 14, 2929–2953, https://doi.org/10.5194/bg-14-2929-2017, https://doi.org/10.5194/bg-14-2929-2017, 2017
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Continental slopes north of the East Siberian Sea are assumed to hold large amounts of methane. We present pore water chemistry from the 2014 SWERUS-C3 expedition. These are among the first results generated from this vast climatically sensitive region, and they imply that abundant methane, including gas hydrates, do not characterize the East Siberian Sea slope or rise. This contradicts previous modeling and discussions, which due to the lack of data are almost entirely based assumption.
Christof Pearce, Aron Varhelyi, Stefan Wastegård, Francesco Muschitiello, Natalia Barrientos, Matt O'Regan, Thomas M. Cronin, Laura Gemery, Igor Semiletov, Jan Backman, and Martin Jakobsson
Clim. Past, 13, 303–316, https://doi.org/10.5194/cp-13-303-2017, https://doi.org/10.5194/cp-13-303-2017, 2017
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The eruption of the Alaskan Aniakchak volcano of 3.6 thousand years ago was one of the largest Holocene eruptions worldwide. The resulting ash is found in several Alaskan sites and as far as Newfoundland and Greenland. In this study, we found ash from the Aniakchak eruption in a marine sediment core from the western Chukchi Sea in the Arctic Ocean. Combined with radiocarbon dates on mollusks, the volcanic age marker is used to calculate the marine radiocarbon reservoir age at that time.
Claudia Agnini, David J. A. Spofforth, Gerald R. Dickens, Domenico Rio, Heiko Pälike, Jan Backman, Giovanni Muttoni, and Edoardo Dallanave
Clim. Past, 12, 883–909, https://doi.org/10.5194/cp-12-883-2016, https://doi.org/10.5194/cp-12-883-2016, 2016
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In this paper we present records of stable C and O isotopes, CaCO3 content, and changes in calcareous nannofossil assemblages in a upper Paleocene-lower Eocene rocks now exposed in northeast Italy. Modifications of nannoplankton assemblages and carbon isotopes are strictly linked one to each other and always display the same ranking and spacing. The integration of this two data sets represents a significative improvement in our capacity to correlate different sections at a very high resolution.
L. Giusberti, F. Boscolo Galazzo, and E. Thomas
Clim. Past, 12, 213–240, https://doi.org/10.5194/cp-12-213-2016, https://doi.org/10.5194/cp-12-213-2016, 2016
B. S. Slotnick, V. Lauretano, J. Backman, G. R. Dickens, A. Sluijs, and L. Lourens
Clim. Past, 11, 473–493, https://doi.org/10.5194/cp-11-473-2015, https://doi.org/10.5194/cp-11-473-2015, 2015
N. Preto, C. Agnini, M. Rigo, M. Sprovieri, and H. Westphal
Biogeosciences, 10, 6053–6068, https://doi.org/10.5194/bg-10-6053-2013, https://doi.org/10.5194/bg-10-6053-2013, 2013
Related subject area
Subject: Carbon Cycle | Archive: Marine Archives | Timescale: Cenozoic
Late Eocene to early Oligocene productivity events in the proto-Southern Ocean and correlation to climate change
Tracing North Atlantic volcanism and seaway connectivity across the Paleocene–Eocene Thermal Maximum (PETM)
Late Paleocene CO2 drawdown, climatic cooling and terrestrial denudation in the southwest Pacific
Late Miocene to Holocene high-resolution eastern equatorial Pacific carbonate records: stratigraphy linked by dissolution and paleoproductivity
Glacial CO2 decrease and deep-water deoxygenation by iron fertilization from glaciogenic dust
Reduced carbon cycle resilience across the Palaeocene–Eocene Thermal Maximum
Tropical Atlantic climate and ecosystem regime shifts during the Paleocene–Eocene Thermal Maximum
Ocean carbon cycling during the past 130 000 years – a pilot study on inverse palaeoclimate record modelling
Stable isotope and calcareous nannofossil assemblage record of the late Paleocene and early Eocene (Cicogna section)
Frequency, magnitude and character of hyperthermal events at the onset of the Early Eocene Climatic Optimum
Astronomical calibration of the geological timescale: closing the middle Eocene gap
Early Paleogene variations in the calcite compensation depth: new constraints using old borehole sediments from across Ninetyeast Ridge, central Indian Ocean
A seasonality trigger for carbon injection at the Paleocene–Eocene Thermal Maximum
Down the Rabbit Hole: toward appropriate discussion of methane release from gas hydrate systems during the Paleocene-Eocene thermal maximum and other past hyperthermal events
Southern ocean warming, sea level and hydrological change during the Paleocene-Eocene thermal maximum
Perturbing phytoplankton: response and isotopic fractionation with changing carbonate chemistry in two coccolithophore species
Gabrielle Rodrigues de Faria, David Lazarus, Johan Renaudie, Jessica Stammeier, Volkan Özen, and Ulrich Struck
Clim. Past, 20, 1327–1348, https://doi.org/10.5194/cp-20-1327-2024, https://doi.org/10.5194/cp-20-1327-2024, 2024
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Export productivity is part of the global carbon cycle, influencing the climate system via biological pump. About 34 million years ago, the Earth's climate experienced a climate transition from a greenhouse state to an icehouse state with the onset of ice sheets in Antarctica. Our study shows important productivity events in the Southern Ocean preceding this climatic shift. Our findings strongly indicate that the biological pump potentially played an important role in that past climate change.
Morgan T. Jones, Ella W. Stokke, Alan D. Rooney, Joost Frieling, Philip A. E. Pogge von Strandmann, David J. Wilson, Henrik H. Svensen, Sverre Planke, Thierry Adatte, Nicolas Thibault, Madeleine L. Vickers, Tamsin A. Mather, Christian Tegner, Valentin Zuchuat, and Bo P. Schultz
Clim. Past, 19, 1623–1652, https://doi.org/10.5194/cp-19-1623-2023, https://doi.org/10.5194/cp-19-1623-2023, 2023
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There are periods in Earth’s history when huge volumes of magma are erupted at the Earth’s surface. The gases released from volcanic eruptions and from sediments heated by the magma are believed to have caused severe climate changes in the geological past. We use a variety of volcanic and climatic tracers to assess how the North Atlantic Igneous Province (56–54 Ma) affected the oceans and atmosphere during a period of extreme global warming.
Christopher J. Hollis, Sebastian Naeher, Christopher D. Clowes, B. David A. Naafs, Richard D. Pancost, Kyle W. R. Taylor, Jenny Dahl, Xun Li, G. Todd Ventura, and Richard Sykes
Clim. Past, 18, 1295–1320, https://doi.org/10.5194/cp-18-1295-2022, https://doi.org/10.5194/cp-18-1295-2022, 2022
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Previous studies of Paleogene greenhouse climates identified short-lived global warming events, termed hyperthermals, that provide insights into global warming scenarios. Within the same time period, we have identified a short-lived cooling event in the late Paleocene, which we term a hypothermal, that has potential to provide novel insights into the feedback mechanisms at work in a greenhouse climate.
Mitchell Lyle, Anna Joy Drury, Jun Tian, Roy Wilkens, and Thomas Westerhold
Clim. Past, 15, 1715–1739, https://doi.org/10.5194/cp-15-1715-2019, https://doi.org/10.5194/cp-15-1715-2019, 2019
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Ocean sediment records document changes in Earth’s carbon cycle and ocean productivity. We present 8 Myr CaCO3 and bulk sediment records from seven eastern Pacific scientific drill sites to identify intervals of excess CaCO3 dissolution (high carbon storage in the oceans) and excess burial of plankton hard parts indicating high productivity. We define the regional extent of production intervals and explore the impact of the closure of the Atlantic–Pacific Panama connection on CaCO3 burial.
Akitomo Yamamoto, Ayako Abe-Ouchi, Rumi Ohgaito, Akinori Ito, and Akira Oka
Clim. Past, 15, 981–996, https://doi.org/10.5194/cp-15-981-2019, https://doi.org/10.5194/cp-15-981-2019, 2019
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Proxy records of glacial oxygen change provide constraints on the contribution of the biological pump to glacial CO2 decrease. Here, we report our numerical simulation which successfully reproduces records of glacial oxygen changes and shows the significance of iron supply from glaciogenic dust. Our model simulations clarify that the enhanced efficiency of the biological pump is responsible for glacial CO2 decline of more than 30 ppm and approximately half of deep-ocean deoxygenation.
David I. Armstrong McKay and Timothy M. Lenton
Clim. Past, 14, 1515–1527, https://doi.org/10.5194/cp-14-1515-2018, https://doi.org/10.5194/cp-14-1515-2018, 2018
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This study uses statistical analyses to look for signs of declining resilience (i.e. greater sensitivity to small shocks) in the global carbon cycle and climate system across the Palaeocene–Eocene Thermal Maximum (PETM), a global warming event 56 Myr ago driven by rapid carbon release. Our main finding is that carbon cycle resilience declined in the 1.5 Myr beforehand (a time of significant volcanic emissions), which is consistent with but not proof of a carbon release tipping point at the PETM.
Joost Frieling, Gert-Jan Reichart, Jack J. Middelburg, Ursula Röhl, Thomas Westerhold, Steven M. Bohaty, and Appy Sluijs
Clim. Past, 14, 39–55, https://doi.org/10.5194/cp-14-39-2018, https://doi.org/10.5194/cp-14-39-2018, 2018
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Past periods of rapid global warming such as the Paleocene–Eocene Thermal Maximum are used to study biotic response to climate change. We show that very high peak PETM temperatures in the tropical Atlantic (~ 37 ºC) caused heat stress in several marine plankton groups. However, only slightly cooler temperatures afterwards allowed highly diverse plankton communities to bloom. This shows that tropical plankton communities may be susceptible to extreme warming, but may also recover rapidly.
Christoph Heinze, Babette A. A. Hoogakker, and Arne Winguth
Clim. Past, 12, 1949–1978, https://doi.org/10.5194/cp-12-1949-2016, https://doi.org/10.5194/cp-12-1949-2016, 2016
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Sensitivities of sediment tracers to changes in carbon cycle parameters were determined with a global ocean model. The sensitivities were combined with sediment and ice core data. The results suggest a drawdown of the sea surface temperature by 5 °C, an outgassing of the land biosphere by 430 Pg C, and a strengthening of the vertical carbon transfer by biological processes at the Last Glacial Maximum. A glacial change in marine calcium carbonate production can neither be proven nor rejected.
Claudia Agnini, David J. A. Spofforth, Gerald R. Dickens, Domenico Rio, Heiko Pälike, Jan Backman, Giovanni Muttoni, and Edoardo Dallanave
Clim. Past, 12, 883–909, https://doi.org/10.5194/cp-12-883-2016, https://doi.org/10.5194/cp-12-883-2016, 2016
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In this paper we present records of stable C and O isotopes, CaCO3 content, and changes in calcareous nannofossil assemblages in a upper Paleocene-lower Eocene rocks now exposed in northeast Italy. Modifications of nannoplankton assemblages and carbon isotopes are strictly linked one to each other and always display the same ranking and spacing. The integration of this two data sets represents a significative improvement in our capacity to correlate different sections at a very high resolution.
V. Lauretano, K. Littler, M. Polling, J. C. Zachos, and L. J. Lourens
Clim. Past, 11, 1313–1324, https://doi.org/10.5194/cp-11-1313-2015, https://doi.org/10.5194/cp-11-1313-2015, 2015
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Several episodes of global warming took place during greenhouse conditions in the early Eocene and are recorded in deep-sea sediments. The stable carbon and oxygen isotope records are used to investigate the magnitude of six of these events describing their effects on the global carbon cycle and the associated temperature response. Findings indicate that these events share a common nature and hint to the presence of multiple sources of carbon release.
T. Westerhold, U. Röhl, T. Frederichs, S. M. Bohaty, and J. C. Zachos
Clim. Past, 11, 1181–1195, https://doi.org/10.5194/cp-11-1181-2015, https://doi.org/10.5194/cp-11-1181-2015, 2015
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Testing hypotheses for mechanisms and dynamics of past climate change relies on the accuracy of geological dating. Development of a highly accurate geological timescale for the Cenozoic Era has previously been hampered by discrepancies between radioisotopic and astronomical dating methods, as well as a stratigraphic gap in the middle Eocene. We close this gap and provide a fundamental advance in establishing a reliable and highly accurate geological timescale for the last 66 million years.
B. S. Slotnick, V. Lauretano, J. Backman, G. R. Dickens, A. Sluijs, and L. Lourens
Clim. Past, 11, 473–493, https://doi.org/10.5194/cp-11-473-2015, https://doi.org/10.5194/cp-11-473-2015, 2015
J. S. Eldrett, D. R. Greenwood, M. Polling, H. Brinkhuis, and A. Sluijs
Clim. Past, 10, 759–769, https://doi.org/10.5194/cp-10-759-2014, https://doi.org/10.5194/cp-10-759-2014, 2014
G. R. Dickens
Clim. Past, 7, 831–846, https://doi.org/10.5194/cp-7-831-2011, https://doi.org/10.5194/cp-7-831-2011, 2011
A. Sluijs, P. K. Bijl, S. Schouten, U. Röhl, G.-J. Reichart, and H. Brinkhuis
Clim. Past, 7, 47–61, https://doi.org/10.5194/cp-7-47-2011, https://doi.org/10.5194/cp-7-47-2011, 2011
R. E. M. Rickaby, J. Henderiks, and J. N. Young
Clim. Past, 6, 771–785, https://doi.org/10.5194/cp-6-771-2010, https://doi.org/10.5194/cp-6-771-2010, 2010
Cited articles
Abels, H. A., Clyde, W. C., Gingerich, P. D., Hilgen, F. J., Fricke, H. C., Bowen, G. J., and Lourens, L. J.: Terrestrial carbon isotope excursions and biotic change during Palaeogene hyperthermals, Nat. Geosci., 5, 326–329, https://doi.org/10.1038/ngeo1427, 2012.
Agnini, C., Muttoni, G., Kent, D. V., and Rio, D.: Eocene biostratigraphy and magnetic stratigraphy from Possagno, Italy: the calcareous nannofossils response to climate variability, Earth Planet. Sc. Lett., 241, 815–830, 2006.
Agnini, C., Macrì, P., Backman, J., Brinkhuis, H., Fornaciari, E., Giusberti, L., Luciani, V., Rio, D., Sluijs, A., and Speranza, F.: An early Eocene carbon cycle perturbation at ∼ 52.5 Ma in the Southern Alps: chronology and biotic response, Paleoceanography, 24, PA2209, https://doi.org/10.1029/2008PA001649, 2009.
Agnini, C., Fornaciari, E., Raffi, I., Catanzariti, R., Pälike, H., Backman, J., and Rio, D.: Biozonation and biochronology of Paleogene calcareous nannofossils from low to middle latitudes, Newsl. Strat., 47, 131–181, 2014.
Agnini, C., Spofforth, D. J. A., Dickens, G. R., Rio, D., Pälike, H., Backman, J., Muttoni, G., and Dallanave, E.: Stable isotope and calcareous nannofossil assemblage record of the late Paleocene and early Eocene (Cicogna section), Clim. Past, 12, 883–909, https://doi.org/10.5194/cp-12-883-2016, 2016.
Anderson, T. F. and Cole, S. A.: The stable isotope geochemistry of marine coccoliths: a preliminary comparison with planktonic foraminifera, J. Foramin. Res., 5, 188–192, 1975.
Arenillas, I., Molina, E., and Schmitz, B.: Planktic foraminiferal and δ13C isotopic changes across the Paleocene/Eocene boundary at Possagno (Italy), Int. J. Earth Sci., 88, 352–364, 1999.
Arthur, M. A., Dean, W. E., Bottjer, D., and Schole, P. A.: Rhythmic bedding in Mesozoic-Cenozoic pelagic carbonate sequences: the primary and diagenetic origin of Milankovitch like cycles, in: Milankovitch and Climate, edited by: Berger, A., Imbrie, J., Hays, J., Kucla, G., and Satzman, B., 191–222, D. Reidel Publ. Company, Dordrecht, Holland, 1984.
Aze, T., Ezard, T. H. G., Purvis, A., Coxall, H. K., Stewart, D. R. M, Wade, B. S., and Pearson, P. N.: A phylogeny of Cenozoic macroperforate planktonic foraminifera from fossil data, Biol. Rev., 86, 900–927, https://doi.org/10.1111/j.1469-185X.2011.00178.x, 2011.
Backman, J.: Late Paleocene to middle Eocene calcareous nannofossil biochronology from the Shatsky Rise, Walvis Ridge and Italy, Palaeogeogr. Palaeocl., 57, 43–59, 1986.
Bé, A. W. H.: Biology of planktonic foraminifera, in: Foraminifera: notes for a short course, Broadhead T., Stud. Geol., 6, Univ. Knoxville, Tenn., 51–92, 1982.
Bé, A. W. H., John, W. M., and Stanley, M. H.: Progressive dissolution and ultrastructural breakdown of planktic foraminifera, Cushman Foundation for Foraminiferal Research Special Publication, 13, 27–55, 1975.
Bé, A. W. H., Spero, H. J., and Anderson, O. R.: Effects of symbiont elimination and reinfection on the life processes of the planktonic foraminifer Globigerinoides sacculifer, Mar. Biol., 70, 73–86, 1982.
Bemis, B. E., Spero, H. J., Bijma, J., and Lea, D. W.: Reevaluation of the oxygen isotopic composition of planktonic foraminifera: Experimental results and revised paleotemperature equations, Paleoceanography, 13, 150–160, 1998.
Berger, W. H.: Foraminiferal ooze: Solution at depth, Science, 156, 383–385, 1967.
Berger, W. H.: Planktonic foraminifera – selective solution and lysocline, Mar. Geol., 8, 111–138, 1970.
Berger, W. H., Bonneau, M.-C., and Parker, F. L.: Foraminifera on the deep-sea floor: lysocline and dissolution rate, Oceanol. Acta, 5, 249–258, 1982.
Berggren, W. A. and Norris, R. D.: Biostratigraphy, phylogeny and systematics of Paleocene trochospiral planktic foraminifera, Micropaleontology, 43 (Suppl. 1), 1–116, 1997.
Berggren, W. A. and Pearson, P. N.: A revised tropical to subtropical Paleogene planktic foraminiferal zonation, J. Foramin. Res., 35, 279–298, 2005.
Berggren, W. A., Kent, D. V., Swisher III, C. C., and Aubry, M.-P.: A revised Cenozoic geochronology and chronostratigraphy, in: Geochronology, time scales and global stratigraphic correlation, edited by: Berggren, W. A, Kent, D. V., Aubry, M.-P., and Hardenbol, J., SEPM Special Publication, 54, 129–212, 1995.
Bijl, P. K., Schouten, S., Sluijs, A., Reichart, G.-J., Zachos, J. C., and Brinkhuis, H.: Early Paleogene temperature evolution of the southwest Pacific Ocean. Nature, 461, 776–779, https://doi.org/10.1038/nature08399, 2009.
Bijl, P. K., Bendle, J. A., Bohaty, S. M., Pross, J., Schouten, S., Tauxe, L., Stickley, C. E., McKay R. M., Röhl, U., Olney, M., Sluijs, A., Escutia Dotti, C., Brinkhuis, H., and Expedition 318 Scientists: Eocene cooling linked to early flow across the Tasmanian Gateway, P. Natl. Acad. Sci. USA, 110, 9645–9650, https://doi.org/10.1073/pnas.1220872110, 2013.
Bleil, U.: The magnetostratigraphy of northwest Pacific sediments, Deep Sea Drilling Project Leg 86, Initial Rep. Deep Sea, 86, 441–458, 1985.
Boersma, A. and Premoli Silva, I.: Paleocene planktonic foraminiferal biogeography and the paleoceanography of the Atlantic-Ocean, Micropaleontology, 29, 355–381, 1983.
Boersma, A., Premoli Silva, I., and Shackleton, N.: Atlantic Eocene planktonic foraminiferal biogeography and stable isotopic paleoceanography, Paleoceanography, 2, 287–331, 1987.
Bohaty, S. M., Zachos, J. C., Florindo, F., and Delaney, M. L.: Coupled greenhouse warming and deep-sea acidification in the middle Eocene, Paleoceanography, 24, PA2207, https://doi.org/10.1029/2008PA001676, 2009.
Bolli, H. M.: Monografia micropaleontologica sul Paleocene e sull'Eocene di Possagno, Provincia di Treviso, Italia, Mémoires Suisses de Paléontologie, 97, 222 pp., 1975.
Borre, M. and Fabricus, I. L.: Chemical and mechanical processes during burial diagenesis of chalk: an interpretation based on specific surface data of deep-sea sediments, Sedimentology, 45, 755–769, 1998.
Bosellini, A.: Dynamics of Tethyan carbonate platform, in: Controls on Carbonate Platform and Basin Platform, edited by: Crevello, P. D., Wilson, J. L., Sarg, J. F., and Read, J. F., SEPM Spec. Publ., 44, 3–13, 1989.
Bowen, G. J., Bralower, T. J., Delaney, M. R., Dickens, G. R., Kelly, D. C., Koch, P. L., Kump, L. R., Meng, J., Sloan, L. C., Thomas, E., Wing, S. L., and Zachos, J. C.: Eocene Hyperthermal Event Offers Insight Into Greenhouse Warming, EOS, 87, 165–169, https://doi.org/10.1029/2006EO170002, 2006.
Braga G.: L'assetto tettonico dei dintorni di Possagno (Trevigiano occidentale), Rendiconti dell'Accademia Nazionale dei Lincei, 8/48, 451–455, 1970.
Bramlette, M. N. and Riedel, W. R.: Stratigraphic value of discoasters and some other microfossils related to recent coccolithophores, J. Paleontol., 28, 385–403, 1954.
Broecker, W. S., Clark, E., McCorkle D. C., Peng, T.-H., Hajadas, I., and Bonani, G.: Evidence of a reduction in the carbonate ion content of the deep see during the course of the Holocene, Paleoceanography, 14, 744–752, 1999.
Brown, J. H., Gillooly, J. F., Allen, A. P., Savage, V. M., and West, G. B.: Toward a metabolic theory of ecology, Ecology, 85, 1771–1789, 2004.
Cita, M. B.: Stratigrafia della Sezione di Possagno, in: Monografia Micropaleontologica sul Paleocene e l'Eocene di Possagno, edited by: Bolli, H. M., Provincia di Treviso, Italia, Schweiz, Palaeontol. Abhandl., 97, 9–33, 1975.
Clyde, W. C., Gingerich, P. D., Wing, S. L., Röhl, U., Westerhold, T., Bowen, G., Johnson, K., Baczynski, A. A., Diefendorf, A., McInerney, F., Schnurrenberger, D., Noren, A., Brady, K., and the BBCP Science Team: Bighorn Basin Coring Project (BBCP): a continental perspective on early Paleogene hyperthermals, Sci. Dril., 16, 21–31, https://doi.org/10.5194/sd-16-21-2013, 2013.
Coccioni, R., Bancalà, G., Catanzariti, R., Fornaciari, E., Frontalini, F., Giusberti, L., Jovane, L., Luciani, V., Savian, J., and Sprovieri, M.: An integrated stratigraphic record of the Palaeocene–lower Eocene at Gubbio (Italy): new insights into the early Palaeogene hyperthermals and carbon isotope excursions, Terra Nova, 24, 380–386, 2012.
Coxall, H. K., Pearson, P. N., Shackleton, N. J., and Hall, M. A.: Hantkeninid depth adaptation: An evolving life strategy in a changing ocean, Geology, 28, 87–90, https://doi.org/10.1130/0091-7613(2000)28<87:HDAAEL>2.0.CO;2, 2000.
Coxall, H. K., Huber, B. T., and Pearson, P. N.: Origin and morphology of the Eocene planktic foraminifera Hantkenina, J. Foramin. Res., 33, 237–261, 2003.
Cramer, B. S., Wright, J. D., Kent, D. V., and Aubry, M.-P.: Orbital climate forcing of δ13C excursions in the late Paleocene–early Eocene (chrons C24n–C25n), Paleoceanography, 18, 1097, https://doi.org/10.1029/2003PA000909, 2003.
Cramer, B. S., Toggweiler, J. R., Wright, M. E., Katz, J. D., and Miller, K. G.: Ocean overturning since the Late Cretaceous: Inferences from a new benthic foraminiferal isotope compilation, Paleoceanography, 24, PA4216, https://doi.org/10.1029/2008PA001683, 2009.
Crouch, E. M., Heilmann-Clausen, C., Brinkhuis, H., Morgans, H. E. G., Rogers, K. M., Egger, H., and Schmitz, B.: Global dinoflagellate event associated with the late Paleocene thermal maximum, Geology, 29, 315–318, 2001.
Dallanave, E., Agnini, C., Bachtadse, V., Muttoni, G., Crampton J. S., Strong, C. P., Hines, B. H., Hollis, C. J., and Slotnick, B. S.: Early to middle Eocene magneto-biochronology of the southwest Pacific Ocean and climate influence on sedimentation: Insights from the Mead Stream section, New Zealand, Geol. Soc. Am. Bull., 127, 643–660, 2015.
DeConto, R. M., Galeotti, S., Pagani, M., Tracy, D., Schaefer, K., Zhang, T., Pollard, D., and Beerling, D. J.: Past extreme warming events linked to massive carbon re-lease from thawing permafrost, Nature, 484, 87–92, https://doi.org/10.1038/nature10929, 2012.
Demicco, R. V.: Modeling seafloor-spreading rates through time, Geology, 32, 485–488, 2004.
Dickens, G. R.: Methane oxidation during the Late Palaeocene Thermal Maximum, B. Soc. Geol. Fr., 171, 37–49, 2000.
Dickens, G. R.: Down the Rabbit Hole: toward appropriate discussion of methane release from gas hydrate systems during the Paleocene-Eocene thermal maximum and other past hyperthermal events, Clim. Past, 7, 831–846, https://doi.org/10.5194/cp-7-831-2011, 2011.
Dickens, G. R. and Backman J.: Core alignment and composite depth scale for the lower Paleogene through uppermost Cretaceous interval at Deep Sea Drilling Project Site 577, Newsl. Stratigr., 46, 47–68, 2013.
Dickens, G. R., O'Neil, J. R., Rea, D. K., and Owen, R. M.: Dissociation of oceanic methane hydrate as a cause of the carbon isotope excursion at the end of the Paleocene, Paleoceanography, 10, 965–971, https://doi.org/10.1029/95PA02087, 1995.
Dickens, G. R., Castillo, M. M., and Walker, J. C. G.: A blast of gas in the latest Paleocene: simulating first-order effects of massive dissociation of oceanic methane hydrate, Geology, 25, 259–262, 1997.
D'Onofrio, R., Luciani, V., Giusberti, L., Fornaciari, E., and Sprovieri, M.: Tethyan planktic foraminiferal record of the early Eocene hyperthermal events ETM2, H2 and I1 (Terche section, northeastern Italy), Rendiconti Online della Società Geologica Italiana, 31, 66–67, https://doi.org/10.3301/ROL.2014.48, 2014.
Douglas, A. E.: Coral bleaching – how and why?, Marine Pollut. Bull., 46 385–392, https://doi.org/10.1016/S0025-326X(03)00037-7, 2003.
Dunkley Jones, T., Lunt, D. J., Schmidt, D. N., Ridgwell, A., Sluijs, A., Valdez, P. J., and Maslin, M. A.: Climate model and proxy data constraints on ocean warming across the Paleocene–Eocene Thermal Maximum, Earth Sci. Rev., 125, 123–145, 2013.
Edgar, K. M., Bohaty, S. M., Gibbs, S. J., Sexton, P. F., Norris, R. D., and Wilson, P. A.: Symbiont “bleaching” in planktic foraminifera during the Middle Eocene Climatic Optimum, Geology, 41, 15–18, https://doi.org/10.1130/G33388.1, 2012.
Ernst, S. R., Guasti, E., Dupuis, C., and Speijer, R. P.: Environmental perturbation in the southern Tethys across the Paleocene/Eocene boundary (Dababiya, Egypt): foraminiferal and clay mineral records, Mar. Micropaleontol., 60, 89–111, 2006.
Ezard, T. H. G., Aze, T., Pearson, P. N., and Purvis, A: Interplay between changing climate and species' ecology drives macroevolutionary dynamics, Science, 332, 349–351, 2011.
Falkowski, P. G., Katz, M. E., Milligan, A. J., Fennel, K., Cramer, B. S., Aubry, M. P., Berner, R. A., Novacek, M. J., and Zapol, W. M.: Mammals evolved, radiated, and grew in size as the concentration of oxygen in Earth's atmosphere increased during the past 100 million years, Science, 309, 2202–2204, 2005.
Figueirido, B., Janis, C. M., Pérez-Claros, J. A., De Renzi, M., and Palmqvist, P.: Cenozoic climate change influences mammalian evolutionary dynamics, P. Natl. Acad. Sci. USA, 109, 722–727, 2012.
Fletcher, B. J., Brentnall, S. J., Anderson, C. W., Berner, R. A., and Beerling, D. J.: Atmospheric carbon dioxide linked with Mesozoic and early Cenozoic climate change, Nat. Geosci., 1, 43–48, 2008.
Fornaciari, E., Giusberti, L., Luciani, V., Tateo, F., Agnini, C., Backman, J., Oddone, M., and Rio, D.: An expanded Cretaceous–Tertiary transition in a pelagic setting of the Southern Alps (central–western Tethys), Palaeogeogr. Palaeocl., 255, 98–131, 2007.
Fraass, A. J., Kelly, D. K., and Peters, S. E.: Macroevolutionary history of the planktic foraminifera, Annu. Rev. Earth Pl. Sc., 43, 139–66, https://doi.org/10.1146/annurev-earth-060614-105059, 2015.
Frank, T. D., Arthur, M. A., and Dean, W. E.: Diagenesis of Lower Cretaceous pelagic carbonates, North Atlantic: paleoceanographic signals obscured, J. Foramin. Res., 29, 340–351, 1999.
Galeotti, S., Krishnan, S., Pagani, M., Lanci, L., Gaudio, A., Zachos, J. C., Monechi, S., Morelli, G., and Lourens, L. J.: Orbital chronology of early Eocene hyperthermals from the Contessa Road section, central Italy, Earth Planet. Sc. Lett., 290, 192–200, https://doi.org/10.1016/j.epsl.2009.12.021, 2010.
Gingerich, P. D.: Rates of evolution on the time scale of the evolutionary process, Genetica, 112–113, 127–144, 2001.
Gingerich, P. D.: Mammalian response to climate change at the Paleocene–Eocene boundary: Polecat Bench record in the northern Bighorn Basin, Wyoming, Geol. Soc. Am. Spec. Pap., 369, 463–478, 2003.
Giusberti, L., Rio, D., Agnini, C., Backman, J., Fornaciari, E., Tateo, E., and Oddone, M.: Mode and tempo of the Paleocene–Eocene thermal maximum in an expanded section from the Venetian pre-Alps, Geol. Soc. Am. Bull., 119, 391–412, 2007.
Guasti, E. and Speijer, R. P.: The Paleocene–Eocene thermal maximum in Egypt and Jordan: an overview of the planktic foraminiferal record, Geol. Soc. Spec. Pap., 424, 53–67, 2007.
Hallock, P.: Fluctuations in the trophic resource continuum: a factor in global diversity cycles?, Paleoceanography, 2, 457–471, 1987.
Hancock, H. J. L. and Dickens, G. R.: Carbonate dissolution episodes in Paleocene and Eocene sediment, Shatsky Rise, west-central Pacific, Proc. Ocean Drill. Progr., Sci. Results, 198, 24 pp., https://doi.org/10.2973/odp.proc.sr.198.116.2005, 2005.
Hemleben, C., Spindler, M., and Anderson, O. R. (Eds.).: Modern planktonic foraminifera, Springer-Verlag, New York, ISBN-13: 9780387968155, 1–363, 1989.
Hilgen, F. J., Abels, H. A., Kuiper, K. F., Lourens, L. J., and Wolthers, M.: Towards a stable astronomical time scale for the Paleocene: aligning Shatsky Rise with the Zumaia – Walvis Ridge ODP Site 1262 composite, Newsl. Stratigr., 48, 91–110, https://doi.org/10.1127/nos/2014/0054, 2015.
Hollis, C. J., Taylor, K. W. R., Handley, L., Pancost, R. D., Huber, M., Creech, J. B., Hines, B. R., Crouch, E. M., Morgans, H. E. G., Crampton, J. S., Gibbs, S., Pearson, P. N., and Zachos, J. C.: Early Paleogene temperature history of the Southwest Pacific Ocean: Reconciling proxies and models, Earth Planet. Sc. Lett., 349–350, 53–66, https://doi.org/10.1016/j.epsl.2012.06.024, 2012.
Huber, M. and Caballero, R.: The early Eocene equable climate problem revisited, Clim. Past, 7, 603–633, https://doi.org/10.5194/cp-7-603-2011, 2011.
Hyland, E. G and Sheldon, N. D.: Coupled CO2-climate response during the Early Eocene Climatic Optimum, Palaeogeogr. Palaeocl., 369, 125–135, 2013.
Hyland, E. G., Sheldon, N. D., and Fan, M.: Terrestrial paleoenvironmental reconstructions indicate transient peak warming during the early Eocene climatic optimum, Geol. Soc. Am. Bull., 125, 1338–1348, 2013.
IPCC, 2014: Climate Change 2014: Synthesis Report, Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Core Writing Team, Pachauri, R. K., and Meyer, L. A., IPCC, Geneva, Switzerland, 151 pp., 2014.
Inglis, G. N., Farnsworth, A., Lunt, D., Foster, G. L., Hollis, C. J., Pagani, M., Jardine, P. E., Pearson, P. N., Markwick, P., Galsworthy, A. M. J., Raynham, L., Taylor, K. W. R., and Pancost, R. D.: Descent toward the icehouse: Eocene sea surface cooling inferred from GDGT distributions, Paleoceanography, 30, 100–1020, https://doi.org/10.1002/2014PA002723, 2015.
Ito, G. and Clift, P. D.: Subsidence and growth of Pacific Cretaceous plateaus, Earth Plant. Sc. Lett., 161, 85–100, 1998.
John, E. H., Pearson, P. N., Coxall, H. K., Birch, H., Wade, B. S., and Foster, G. L.: Warm ocean processes and carbon cycling in the Eocene, Philos. T. R. Soc., A, 371, 20130099, https://doi.org/10.1098/rsta.2013.0099, 2013.
John, E. H., Wilson, J. D., Pearson, P. N., and Ridgwell, A.: Temperature-dependent remineralization and carbon cycling in the warm Eocene oceans, Palaeogeogr. Palaeocl., 413, 158–166, 2014.
Kelly, D. C., Bralower, T. J., Zachos, J. C., Premoli Silva, I., and Thomas, E.: Rapid diversification of planktonic foraminifera in the tropical Pacific (ODP Site 865) during the late Paleocene thermal maximum, Geology, 24, 423–426, 1996.
Kelly, D. C., Bralower, T. J., and Zachos, J. C.: Evolutionary consequences of the latest Paleocene thermal maximum for tropical planktonic foraminifera, Palaeogeogr., Palaeoclimatol., Palaeoecol., 141, 139–161, 1998.
Kelly, D. C.: Response of Antartic (ODP) planktonic foraminifera to the Paleocene-Eocene Thermal Maximum: faunal evidence for ocean/climate change, Paleoceanography, 17, 1071, https://doi.org/10.1029/2002PA000761, 2002.
Kennett, J. P. and Stott, L. D.: Abrupt deep-sea warming, palaeoceanographic changes and benthic extinctions at the end of the Palaeocene, Nature, 353, 225–229, 1991.
Kirtland-Turner, S., Sexton, P. F., Charled, C. D., and Norris, R. D.: Persistence of carbon release events through the peak of early Eocene global warmth, Nat. Geosci., 7, 748–751, https://doi.org/10.1038/NGEO2240, 2014.
Komar, N., Zeebe, R. E., and Dickens, G. R.: Understanding long-term carbon cycle trends: the late Paleocene through the early Eocene, Paleoceanography, 28, 650–662, https://doi.org/10.1002/palo.20060, 2013.
Kroenke, L. W., Berger, W. H., Janecek, T. R., Backman, J., Bassinot, F., Corfield, R. M., Delaney, M. L., Hagen, R., Jansen, E., Krissek, L. A., Lange C., Leckie R. M., Lykke Lind, I., Lyle, M. W., Mahoney, J. J., Marsters, J. C., Mayer, L., Mosher, D. C., Musgrave, R., Prentice, M. L., Resig, J. M., Schmidt, H., Stax, R., Storey, M., Takahashi, K., Takayama, T., Tarduno, J. A., Wilkens, R. H., Wu, G., and Barbu, E. M.: Ontong Java Plateau, Leg 130: synopsis of major drilling results, Proceedings of the Ocean Drilling Program, Initial Reports, 130, 497–537, 1991.
Kurtz, A. C., Kump, L. R., Arthur, M. A., Zachos, J. C., and Paytan, A.: Early Cenozoic decoupling of the global carbon and sulfur cycles, Paleoceanography, 18, 1090, https://doi.org/10.1029/2003PA000908, 2003.
Lauretano, V., Littler, K., Polling, M., Zachos, J. C., and Lourens, L. J.: Frequency, magnitude and character of hyperthermal events at the onset of the Early Eocene Climatic Optimum, Clim. Past, 11, 1313–1324, https://doi.org/10.5194/cp-11-1313-2015, 2015.
Lee, C. T., Shen, B., Slotnick, B. S., Liao, K., Dickens, G. R., Yokoyama, Y., Lenardic, A., Dasgupta, R., Jellinek, M., Lackey, J. S., Schneider, T., and Tice, M. M.: Continental arc-island arc fluctuations, growth of crustal carbonates, and long-term climate change, Geosphere, 9, 21–36, 2013.
LeGrande, A. N. and Schmidt, G. A.: Global gridded data set of the oxygen isotopic composition in seawater, Geophys. Res. Lett., 33, L12604, https://doi.org/10.1029/2006GL026011, 2006.
Leon-Rodriguez, L. and Dickens, G. R.: Constraints on ocean acidification associated with rapid and massive carbon injections: The early Paleogene record at ocean drilling program site 1215, equatorial Pacific Ocean, Palaeogeogr. Palaeocl., 298, 409–420, https://doi.org/10.1016/j.palaeo.2010.10.029, 2010.
Lirer, F.: A new technique for retrieving calcareous microfossils from lithified lime deposits, Micropaleontol., 46, 365–369, 2000.
Littler, K., Röhl, U., Westerhold, T., and Zachos, J. C.: A high-resolution benthic stable-isotope for the South Atlantic: implications for orbital-scale changes in Late Paleocene-early Eocene climate and carbon cycling, Earth Planet. Sc. Lett., 401, 18–30, https://doi.org/10.1016/j.epsl.2014.05.054, 2014.
Lourens, L. J., Sluijs, A., Kroon, D., Zachos, J. C., Thomas, E., Röhl, U., Bowles, J., and Raffi, I.: Astronomical pacing of late Palaeocene to early Eocene global warming events, Nature, 7045, 1083–1087, 2005.
Lowenstein, T. K. and Demicco R. V.: Elevated Eocene atmospheric CO2 and its subsequent decline, Science, 313, 1928, https://doi.org/10.1126/science.1129555, 2006.
Lu, G.: Paleocene-Eocene transitional events in the ocean: Faunal and isotopic analyses of planktic foraminifera, PhD Thesis, Princeton University, Princeton, 1–284, 1995.
Lu, G. and Keller, G.: Planktic foraminiferal faunal turnovers in the subtropical Pacific during the late Paleocene to early Eocene, J. Foramin. Res., 25, 97–116, 1995.
Lu, G., Keller, G., and Pardo, A.: Stability and change in Tethyan planktic foraminifera across the Paleocene-Eocene transition, Mar. Micropaleontol., 35, 203–233, 1998.
Luciani, V., Giusberti, L., Agnini, C., Backman, J., Fornaciari, E., and Rio., D.: The Paleocene–Eocene Thermal Maximum as recorded by Tethyan planktonic foraminifera in the Forada section (northern Italy), Mar. Micropaleontol., 64, 189–214, 2007.
Luciani, V., Giusberti, L., Agnini, C., Fornaciari, E., Rio, D., Spofforth, D. J. A., and Pälike, H.: Ecological and evolutionary response of Tethyan planktonic foraminifera to the middle Eocene climatic optimum (MECO) from the Alano section (NE Italy), Palaeogeogr. Palaeocl., 292, 82–95, https://doi.org/10.1016/j.palaeo.2010.03.029, 2010.
Luciani, V. and Giusberti, L.: Reassessment of the early–middle Eocene planktic foraminiferal biomagnetochronology: new evidence from the Tethyan Possagno section (NE Italy) and Western North Atlantic Ocean ODP Site 1051, J. Foramin. Res., 44, 187–201, 2014.
Lunt, D. J., Ridgwell, A., Sluijs, A., Zachos, J., Hunter, S., and Haywood, A.: A model for orbital pacing of methane hydrate destabilization during the Palaeogene, Nat. Geosci., 4, 775–778, https://doi.org/10.1038/NGEO1266, 2011.
Marshall, J. D.: Climatic and oceanographic isotopic signals from the carbonate rock records and their preservation, Geol. Mag., 129, 143–160, 1992.
Martini, E.: Standard Tertiary and Quaternary calcareous nannoplankton zonation, in: Proceedings of the 2nd Planktonic Conference, edited by: Farinacci, A., Edizioni Tecnoscienza, Roma, vol. 2, 739–785, 1971.
Matter, A., Douglas, R. G., and Perch-Nielsen, K: Fossil preservation, geochemistry and diagenesis of pelagic carbonates from Shatsky Rise, northwest Pacific, Initial Rep. Deep Sea, 32, 891–922, https://doi.org/10.2973/dsdp.proc.32.137.1975, 1975.
McInerney, F. A. and Wing, S. L.: The Paleocene–Eocene thermal maximum: a perturbation of carbon cycle, climate, and biosphere with implications for the future, Ann. Rev. Earth Planet. Sci., 39, 489–516, https://doi.org/10.1146/annurev-earth-040610-133431, 2011.
Mita, I.: Data Report: Early to late Eocene calcareous nannofossil assemblages of Sites 1051 and 1052, Blake Nose, Northwestern Atlantic Ocean, Proc. Ocean Drill. Progr., Sci. Results, 171B, 1–28, 2001.
Molina, E., Arenillas, I., and Pardo, A.: High resolution planktic foraminiferal biostratigraphy and correlation across the Palaeocene Palaeocene/Eocene boundary in the Tethys, B. Soc. Géol. Fr., 170, 521–530, 1999.
Monechi, L., Bleil, U., and Backman, J.: Magnetobiochronology of Late Cretaceous-Paleogene and late Cenozoic pelagic sedimentary sequences from the northwest Pacific, Deep Sea Drilling Project, Leg 86, Site 577, Proceedings of the Ocean Drilling Program 86, Initial Reports, Ocean Drilling Program, College Station, TX, https://doi.org/10.2973/dsdp.proc.86.137.1985, 1985.
Nguyen, T. M. P., Petrizzo, M.-R., and Speijer, R. P.: Experimental dissolution of a fossil foraminiferal assemblage (Paleocene–Eocene Thermal Maximum, Dababiya, Egypt): implications for paleoenvironmental reconstructions, Mar. Micropaleontol., 73, 241–258, https://doi.org/10.1016/j.marmicro.2009.10.005, 2009.
Nguyen, T. M. P., Petrizzo, M.-R., Stassen, P., and Speijer, R. P.: Dissolution susceptibility of Paleocene–Eocene planktic foraminifera: Implications for palaeoceanographic reconstructions, Mar. Micropaleontol., 81, 1–21, 2011.
Nicolo, M. J., Dickens, G. R., Hollis, C. J., and Zachos, J. C.: Multiple early Eocene hyperthermals: their sedimentary expression on the New Zealand continental margin and in the deep sea, Geology, 35, 699–702, 2007.
Norris, R. D.: Biased extinction and evolutionary trends, Paleobiology, 17, 388–399, 1991.
Norris, R.: Symbiosis as an evolutionary innovation in the radiation of Paleocene planktic foraminifera, Paleobiology, 22, 461–480, 1996.
Norris, R. D., Kroon, D., and Klaus, A.: Proceedings of the Ocean Drilling Program, Initial Reports, Proc. Ocean Drill. Progr., Sci. Results, 171B, 1–749, 1998.
O'Connor, M., Piehler, M. F., Leech, D. M., Anton, A., and Bruno, J. F.: Warming and resource availability shift food web structure and metabolism, PLOS Biol., 7, 1–6, https://doi.org/10.1371/journal.pbio.1000178, 2009.
Ogg, J. G. and Bardot, L.: Aptian through Eocene magnetostratigraphic correlation of the Blake Nose Transect (Leg 171B), Florida continental margin, Proc. Ocean Drill. Progr., Sci. Results, 171B, 1–58, https://doi.org/10.2973/odp.proc.sr.171B.104.2001, 2001.
Okada, H. and Bukry, D.: Supplementary modification and introduction of code numbers to the low-latitude coccolith biostratigraphic zonation (Bukry, 1973, 1975), Mar. Micropaleontol., 5, 321–325, 1980.
Olivarez Lyle, A. and Lyle, M. W.: Missing organic carbon in Eocene marine sediments: Is metabolism the biological feedback that maintains end-member climates?, Paleoceanography, 21, PA2007, https://doi.org/10.1029/2005PA001230, 2006.
Oreshkina, T. V.: Evidence of late Paleocene – early Eocene hyperthermal events in biosiliceous sediments of Western Siberia and adjacent areas, Aust. J. Earth Sci., 105, 145–153, 2012.
Pälike, H., Lyle, M. W., Nishi, H., Raffi, I., Ridgwell, A., Gamage, K., Klaus, A., Acton, G., Anderson, L., Backman, J., Baldauf, J., Beltran, C., Bohaty S. M., Bown, P., Busch, W. Channell, J. E. T., Chun, C. O. J., Delaney, M., Dewangan, P., Dunkley Jones, T., Edgar, K. M., Evans, H., Fitch, P. L., Foster, G. L., Gussone, N., Hasegawa, H., Hathorne, E. C., Hayashi, H., Herrle, J. O., Holbourn, A., Hovan, S., Hyeong, K., Iijima, K., Ito, T., Kamikuri, S., Kimoto, K., Kuroda, J., Leon-Rodriguez, L., Malinverno, A., Moore, T. C., Brandon, H., Murphy, D. P., Nakamura, H., Ogane, K., Ohneiser, C. Richter, C., Robinson, R., Rohling, E. J., Romero, O., Sawada, K., Scher, H., Schneider, L., Sluijs, A., Takata, H., Tian, J., Tsujimoto, A., Wade, B. S., Westerhold, T., Wilkens, R., Williams, T., Wilson, P. A., Yamamoto, Y., Yamamoto, S., Yamazaki, T., and Zeebe, R. E.: Cenozoic record of the equatorial Pacific carbonate compensation depth, Nature, 488, 609–614, https://doi.org/10.1038/nature11360, 2012.
Pearson P. N. and Coxall, H. K.: Origin of the Eocene planktonic foraminifer Hantkenina by gradual evolution, Palaeontology, 57, 243–267, 2014.
Pearson, P. N. and Palmer, M. R.: Atmospheric carbon dioxide concentrations over the past 60 million years, Nature, 406, 695–699, https://doi.org/10.1038/35021000, 2000.
Pearson, P. N., Shackleton, N. J., and Hall, M. A.: Stable isotope paleoecology of middle Eocene planktonic foraminifera and multi-species isotope stratigraphy, DSDP Site 523, south Atlantic, J. Foramin. Res., 23, 123–140, 1993.
Pearson, P. N., Ditchfield, P. W, Singano, J., Harcourt-Brown, K. G., Nicholas, C. J., Olsson, R. K, Shackleton, N. J., and Hall, M. A.: Warm tropical sea surface temperatures in the Late Cretaceous and Eocene epochs, Nature, 413, 481–487, https://doi.org/10.1038/35097000, 2001.
Pearson, P. N., Olsson, R. K., Huber, B. T., Hemleben, C., and Berggren, W. A. (Eds.): Atlas of Eocene planktonic foraminifera, Cushman Found, Foram. Res., Spec. Publ., 41, 1–514, 2006.
Pearson, P. N., Van Dongen, B. E., Nicholas, C. J., Pancost, R. D., Schouten, S., Singano, J. M., and Wade, B. S.: Stable warm tropical climate through the Eocene Epoch, Geology, 35, 211–214, 2007.
Petrizzo, M. R.: The onset of the Paleocene–Eocene Thermal Maximum (PETM) at Sites 1209 and 1210 (Shatsky Rise, Pacific Ocean) as recorded by planktonic foraminifera, Mar. Micropaleontol., 63, 187–200, 2007.
Petrizzo, M.-R., Leoni, G., Speijer, R. P., De Bernardi, B., and Felletti, F.: Dissolution susceptibility of some Paleogene planktonic foraminifera from ODP Site 1209 (Shatsky Rise, Pacific Ocean), J. Foramin. Res., 38, 357–371, 2008.
Pross, J., Contreras, L., Bijl, P. K., Greenwood, D. R., Bohaty, S. M., Schouten, S., Bendle J. A., Röhl, U., Tauxe, L., Raine, J. I., Claire, E., Huck, C. E., van de Flierdt, T., Stewart S. R. Jamieson, S. S. R., Stickley, C. E., van de Schootbrugge, B., Escutia, C., and Brinkhuis, H.: Persistent near-tropical warmth on the Antarctic continent during the early Eocene Epoch, Nature, 488, 73–77, https://doi.org/10.1038 /nature11300, 2012.
Pujalte, V., Baceta, J. I., and Schmitz, B.: A massive input of coarse-grained siliciclastics in the Pyrenean Basin during the PETM: the missing ingredient in a coeval abrupt change in hydrological regime, Clim. Past, 11, 1653–1672, https://doi.org/10.5194/cp-11-1653-2015, 2015.
Quillévéré, F., Norris, R. D., Moussa, I., and Berggren, W. A.: Role of photosymbiosis and biogeography in the diversification of early Paleogene acarininids (planktonic foraminifera), Paleobiology, 27, 311–326, 2001.
Raffi, I. and De Bernardi, B.: Response of calcareous nannofossils to the Paleocene-Eocene Thermal Maximum: observations on composition, preservation and calcification in sediments from ODP Site 1263 (Walvis Ridge-SW Atlantic), Mar. Micropaleontol., 69, 119–138, 2008.
Raymo, M. E. and Ruddiman W. F.: Tectonic forcing of late Cenozoic climate, Nature, 359, 117–122, 1992.
Reghellin, D., Coxall, H. K., Dickens, G. R., and Backman, J.: Carbon and oxygen isotopes of bulk carbonate in sediment deposited beneath the eastern equatorial Pacific over the last 8 million years, Paleoceanography, 30, 1261–1286, https://doi.org/10.1002/2015PA002825, 2015.
Röhl, U., Westerhold, T., Monechi, S., Thomas, E., Zachos, J. C., and Donner, B.: The third and final early Eocene Thermal Maximum: characteristics, timing, and mechanisms of the “X” event, Geol. Soc. Am. Abstr. Programs, 37, p. 264, 2005.
Scheibner, C. and Speijer, R. P.: Decline of coral reefs during late Paleocene to early Eocene global warming, eEarth, 3, 19–26, https://doi.org/10.5194/ee-3-19-2008, 2008.
Schlanger, S. O. and Douglas, R. G.: The pelagic ooze-chalk-limestone transition and its implications for marine stratigraphy, in: Pelagic Sediments: on Land and under the Sea, edited by: Hsü, K. J. and Jenkyns, H. C., Sp. Publ. Int., 1, 117–148, 1974.
Schmidt, D. N., Thierstein, H. R., and Bollmann, J.: The evolutionary history of size variation of planktic foraminiferal assemblages in the Cenozoic, Palaeogeogr. Palaeocl., 212, 159–180, https://doi.org/10.1016/j.palaeo.2004.06.002, 2004.
Schmitz, B. and Pujalte, V.: Abrupt increase in seasonal extreme precipitation at the Paleocene-Eocene boundary, Geology, 35, 215–218, 2007.
Schneider, L. J. Bralower, T. J., and Kump, L. J.: Response of nannoplankton to early Eocene ocean destratification, Palaeogeogr. Palaeocl., 310, 152–162, 2011.
Scholle, P. A. and Arthur, M. A.: Carbon isotope fluctuations in Cretaceous pelagic limestones: potential stratigraphic and petroleum exploration tool, Am. Assoc. Petr. Geol. B., 64, 67–87, 1980.
Schulte, P., Scheibner, C., and Speijer, R.C.: Fluvial discharge and sea-level changes controlling black shale deposition during the Paleocene–Eocene Thermal Maximum in the Dababiya Quarry section, Egypt, Chem. Geol., 285, 167–183, https://doi.org/10.1016/j.chemgeo.2011.04.004, 2011.
Schrag, D. P., DePaolo, D. J., and Richter, F. M.: Reconstructing past sea surface temperatures: correcting for diagenesis of bulk marine carbonate, Geochim. Cosmochim. Ac., 59, 2265–2278, 1995.
Schmitz, B., Speijer, R. P., and Aubry M.-P.: Latest Paleocene benthic extinction event on the southern Tethyan shelf (Egypt): Foraminiferal stable isotopic (δ13C, δ18O) records, Geology, 24, 347–350, 1996.
Self-Trail, J. M., Powars, D. S., Watkins, D. K., and Wandless, G. A.: Calcareous nannofossil assemblage changes across the Paleocene–Eocene Thermal Maximum: Evidence from a shelf setting, Mar. Micropaleontol., 92–93, 61–80, 2012.
Sexton, P. F., Wilson, P. A., and Norris, R. D.: Testing the Cenozoic multisite composite δ18O and δ13C curves: New monospecific Eocene records from a single locality, Demerara Rise (Ocean Drilling Program Leg 207), Paleoceanography, 21, PA2019, https://doi.org/10.1029/2005PA001253, 2006.
Sexton, P. F., Norris R. D., Wilson, P. A., Pälike, H., Westerhold, T., Röhl, U., Bolton, C. T., and Gibbs, S.: Eocene global warming events driven by ventilation of oceanic dissolved organic carbon, Nature, 471, 349–353, https://doi.org/10.1038/nature09826, 2011.
Shackleton, N. J.: Paleogene stable isotope events, Palaeogeogr. Palaeocl., 57, 91–102, 1986.
Shackleton, N. J. and Hall, M. A.: Carbon isotope data from Leg 74 sediments, Initial Rep. Deep Sea, 74, 613–619, 1984.
Shackleton, N. J. and Hall, M. A.: Stable isotope records in bulk sediments (Leg 138), Proc. Ocean Drill. Progr., Sci. Results, 138, 797–805, https://doi.org/10.2973/odp.proc.sr.171B.104.2001, 1995.
Shamrock, J. L., Watkins, D. K., and Johnston, K. W.: Eocene bio-geochronology of ODP Leg 122 Hole 762C, Exmouth Plateau (northwest Australian Shelf), Stratigraphy, 9, 55–76, 2012.
Shipboard Scientific Party, 1985, Site 577: Initial Rep. Deep Sea, 86, edited by: Heath, G. R., Burckle, L. H., Heath, G. R., Burckle, L. H., D'Agostino, A. E., Bleil, U., Horai, K., Jacobi, R. D., Janecek, T. R., Koizumi, I., Krissek, L. A., Monechi, S., Lenotre, N., Morley, J. J., Schultheiss, P. J., Wright, A. A., and Turner, K. L., US Government Printing Office, Washington, 91–137, https://doi.org/10.2973/dsdp.proc.86.104.1985, 1985.
Shipboard Scientific Party, 1998, Site 1051: Proceeding Ocean Drilling Program, Initial Reports, 171B, edited by: Norris, R. D., Kroon, D., Klaus, A., Norris, R. D., Kroon, D., Klaus, A., Alexander, I. T., Bardot, L. P., Barker, C. E., Bellier, J.-P., Blome, C. D., Clarke, L. J., Erbacher, J., Faul, K. L., Holmes, M., Huber, B. T., Katz, M. E., MacLeod, K. G., Marca, S., Martinez-Ruiz, F. C., Mita, I., Nakai, M., Ogg, J. G., Pak, D. K., Pletsch, T. K., Self-Trail, J. M., Shackleton, N. J., Smit, J., Ussler III, W., Watkins, D. K., Widmark, J., Wilson, P. A., Baez, L. A., and Kapitan-White, E., Ocean Drilling Program, College Station, TX, 171–239, https://doi.org/10.2973/odp.proc.ir.171b.105.1998, 1998.
Sims, P. A., Mann, D. G., and Medlin, L. K.: Evolution of the diatoms: insights from fossil, biological and molecular data, Phycologia, 45, 361–402, 2006.
Sinton, C. W. and Duncan R. A.: 40Ar-39Ar ages of lavas from the southeast Greenland margin, ODP Leg 152, and the Rockall Plateau, DSDP Leg 81, Ocean Drill. Progr., Sci. Res., 152, 387–402, https://doi.org/10.2973/odp.proc.sr.152.234.1998, 1998.
Slotnick, B. S., Dickens, G. R., Nicolo, M. J., Hollis, C. J., Crampton, J. S., Zachos, J. C., and Sluijs, A.: Large-amplitude variations in carbon cycling and terrestrial weathering during the latest Paleocene and earliest Eocene: The Record at Mead Stream, New Zealand, J. Geol., 120, 487–505, 2012.
Slotnick, B. S., Dickens, G. R., Hollis, C. J., Crampton, J. S., Percy Strong, C., and Zachos, J. C.: Extending lithologic and stable carbon isotope records at Mead Stream (New Zealand) through the middle Eocene, in: Dickens G.R., Luciani V. eds. Climatic and biotic events of the Paleogene 2014 CBEP 2014, Volume 31, Roma, Società Geologica Italiana, 201–202, 2014.
Slotnick, B. S., Dickens, G. R., Hollis, C. J., Crampton, J. S., Strong, P. S., and Phillips, A.: The onset of the Early Eocene Climatic Optimum at Branch Stream, Clarence River valley, New Zealand, New Zeal. J. Geol. Geop., 58, 1–19, https://doi.org/10.1080/00288306.2015.1063514, 2015a.
Slotnick, B. S., Lauretano, V., Backman, J., Dickens, G. R., Sluijs, A., and Lourens, L.: Early Paleogene variations in the calcite compensation depth: new constraints using old borehole sediments from across Ninetyeast Ridge, central Indian Ocean, Clim. Past, 11, 473–493, https://doi.org/10.5194/cp-11-473-2015, 2015b.
Sluijs, A. and Dickens, G. R.: Assessing offsets between the δ13C of sedimentary components and the global exogenic carbon pool across early Paleogene carbon cycle perturbations, Global Biogeochem. Cy., 26, GB4019, https://doi.org/10.1029/2011GB004094, 2012.
Sluijs, A., Schouten, S., Pagani, M., Woltering, M., Brinkhuis, H., Sinninghe Damsté, J. S., Dickens, G. R., Huber, M., Reichart, G., Stein, R., Matthiessen, J., Lourens, L. J., Pedentchouk, N., Backman, J., Moran, K., and the Expedition 302 Scientists: Subtropical Arctic Ocean temperatures during the Palaeocene/Eocene thermal maximum, Nature, 441, 610–613, https://doi.org/10.1038/nature04668, 2006.
Sluijs, A., Bowen, G. J., Brinkhuis, H., Lourens, L. J., and Thomas, E.: The Paleocene–Eocene thermal maximum super greenhouse: biotic and geochemical signatures, age models and mechanisms of global change, in: Deep-Time Perspectives on Climate Change, edited by: Williams, M., Haywood, A. M., Gregory, F. J., and Schmidt, D. N., Micropalaeont. Soc. Spec. Publ., Geological Society, London, 323–350, 2007.
Smith, R. Y., Greenwood, D. R., and Basinger, J. F.: Estimating paleoatmospheric pCO2 during the Early Eocene Climatic Optimum from stomatal frequency of Ginkgo, Okanagan Highlands, British Columbia, Canada, Palaeogeogr. Palaeocl., 293, 120–131, 2010.
Stap, L., Sluijs, A., Thomas, E., and Lourens L. J.: Patterns and magnitude of deep sea carbonate dissolution during Eocene Thermal Maximum 2 and H2, Walvis Ridge, southeastern Atlantic Ocean, Paleoceanography, 24, 1211, https://doi.org/10.1029/2008PA001655, 2009.
Thomas, E.: Biogeography of the late Paleocene benthic foraminiferal extinction, in: Late Paleocene-early Eocene climatic and biotic events in the marine and terrestrial Records, edited by: Aubry, M.-P., Lucas, S., and Berggren, W. A., Columbia University Press, New York, 214–243, 1998.
Thomas, E., Brinkhuis, H., Huber, M., and Röhl, U.: An ocean view of the early Cenozoic Greenhouse world, Oceanography, 19, 94–103, 2006.
Thunell R. C. and Honjo, S.: Calcite dissolution and the modification of planktonic foraminiferal assemblages, Mar. Micropaleontol., 6, 169–182, 1981.
Vandenberghe, N., Hilgen, F. J., Speijer, R. P., Ogg, J. G., Gradstein, F. M., Hammer, O., Hollis, C. J., and Hooker, J. J.: The Paleogene Period, in: The Geologic Time Scale 2012, edited by: Gradstein, F., Ogg, J. G., Schmitz, M. D., and Ogg, G. M., 855–921, Elsevier, Amsterdam, 2012.
Van Hinsbergen, D. J. J., de Groot, L. V., van Schaik, S. J., Spakman, W., Bijl, P. K., Sluijs, A., Langereis, C. G., and Brinkhuis, H.: A Paleolatitude Calculator for Paleoclimate Studies, PLoS ONE, 10, e0126946, https://doi.org/10.1371/journal.pone.0126946, 2015.
Vincent, E. and Berger, W. H: Planktonic foraminifera and their use in paleoccanography; in: The Sea, edited by: Emiliani, C., New York, 7, 1025–1119, 1981.
Vogt, P. R.: Global magmatic episodes: New evidence and implications for the steady state mid-oceanic ridge, Geology, 7, 93–98, 1979.
Wade, B. S.: Planktonic foraminiferal biostratigraphy and mechanisms in the extinction of Morozovella in the late Middle Eocene, Mar. Micropaleontol., 51, 23–38, 2004.
Wade, B. S., Al-Sabouni, N., Hemleben, C., and Kroon, D.: Symbiont bleaching in fossil planktonic foraminifera, Evol. Ecol., 22, 253–265, https://doi.org/10.1007/s10682-007-9176-6, 2008.
Wade, B. S., Pearson, P. N., Berggren, W. A., and Pälike, H.: Review and revision of Cenozoic tropical planktonic foraminiferal biostratigraphy and calibration to the geomagnetic polarity and astronomical time scale, Earth Sci. Rev., 104, 111–142, https://doi.org/10.1016/j.earscirev.2010.09.003, 2011.
Westerhold, T., Röhl, U., Frederichs, T., Bohaty, S. M., and Zachos, J. C.: Astronomical calibration of the geological timescale: closing the middle Eocene gap, Clim. Past, 11, 1181–1195, https://doi.org/10.5194/cp-11-1181-2015, 2015.
Wilf, P., Cúneo, R. N., Johnson, K. R., Hicks, J. F., Wing, S. L., and Obradovich, J. D.: High plant diversity in Eocene South America: evidence from Patagonia, Science, 300, 122–125, 2003.
Wing, S. L., Bown, T. M., and Obradovich, J. D.: Early Eocene biotic and climatic change in interior western North America, Geology, 19, 1189–1192, 1991.
Woodburne, M. O., Gunnell, G. F., and Stucky, R. K.: Climate directly influences Eocene mammal faunal dynamics in North America, P. Natl. Acad. Sci. USA, 106, 13399–13403, 2009.
Yamaguchi, T. and Norris R. D.: Deep-sea ostracode turnovers through the Paleocene-Eocene thermal maximum in DSDP Site 401, Bay of Biscay, North Atlantic, Mar. Micropaleontol., 86–87, 32–44, 2012.
Yapp, C. J.: Fe(CO3)OH in goethite from a mid-latitude North American Oxisol: Estimate of atmospheric CO2 concentration in the early Eocene “climatic optimum”, Geochim. Cosmochim. Ac., 68, 935–947, https://doi.org/10.1016/j.gca.2003.09.002, 2004.
Zachos, J. C., Pagani, M., Sloan, L., Thomas, E., and Billups, K.: Trends, rhythms, and aberrations in global climate 65 Ma to Present, Science, 292, 686–693, 2001.
Zachos, J. C., Röhl, U., Schellenberg, S. A., Sluijs, A., Hodell, D. A., Kelly, D. C., Thomas, E., Nicolo, M., Raffi, I., Lourens, L. J., McCarren, H., and Kroon, D.: Rapid acidification of the ocean during the Paleocene–Eocene thermal maximum, Science, 308, 1611–1615, 2005.
Zachos, J. C., Dickens, G. R., and Zeebe, R. E.: An early Cenozoic perspective on greenhouse warming and carbon-cycle dynamics, Nature, 451, 279–283, 2008.
Zachos, J. C., McCarren, H., Murphy, B., Röhl, U., and Westerhold, T.: Tempo and scale of late Paleocene and early Eocene carbon isotope cycles: Implications for the origin of hyperthermals, Earth Planet. Sc. Lett., 299, 242–249, https://doi.org/10.1016/j.epsl.2010.09.004, 2010.
Zeebe, R. E., Zachos, J. C., and Dickens, G. R.: Carbon dioxide forcing alone insufficient to explain Palaeocene–Eocene Thermal Maximum warming, Nat. Geosci., 2, 576–580, https://doi.org/10.1038/ngeo578, 2009.
Zonneveld, J. P., Gunnell, G. F., and Bartels, W. S.: Early Eocene fossil vertebrates from the southwestern Green River Basin, Lincoln and Uinta Counties, Wyoming, J. Vertebr. Paleontol., 20, 369–386, 2000.
Short summary
The symbiont-bearing planktic foraminiferal genera Morozovella and Acarinina were among the most important calcifiers of the early Paleogene tropical and subtropical oceans. However, a remarkable and permanent switch in the relative abundance of these genera happened in the early Eocene. We show that this switch occurred at low-latitude sites near the start of the Early Eocene Climatic Optimum (EECO), a multi-million-year interval when Earth surface temperatures reached their Cenozoic maximum.
The symbiont-bearing planktic foraminiferal genera Morozovella and Acarinina were among the most...
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