Hantkeninid depth adaptation: an evolving life-strategy in a changing ocean
The interplay between evolution, paleoecology, and environmental change is examined in a geochemical study of a group of Eocene planktonic foraminifera. The hantkeninids, which are well-known biostratigraphic inde × fossils, underwent spectacular long-term evolution in the middle and upper Eocene (4...
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ftubristolcris:oai:research-information.bris.ac.uk:publications/248487cb-6abd-4041-a031-c9fa4e6ec332 2024-04-28T08:36:29+00:00 Hantkeninid depth adaptation: an evolving life-strategy in a changing ocean Hantkeninid depth adaptation:an evolving life-strategy in a changing ocean Coxall, HK Pearson, PN Shackleton, NJ Hall, MA 2000 https://hdl.handle.net/1983/248487cb-6abd-4041-a031-c9fa4e6ec332 https://research-information.bris.ac.uk/en/publications/248487cb-6abd-4041-a031-c9fa4e6ec332 https://doi.org/10.1130/0091-7613(2000)28<87:HDAAEL>2.0.CO;2 eng eng https://research-information.bris.ac.uk/en/publications/248487cb-6abd-4041-a031-c9fa4e6ec332 info:eu-repo/semantics/restrictedAccess Coxall , HK , Pearson , PN , Shackleton , NJ & Hall , MA 2000 , ' Hantkeninid depth adaptation : an evolving life-strategy in a changing ocean ' , Geology , vol. 28 , no. 1 , pp. 87-90 . https://doi.org/10.1130/0091-7613(2000)28<87:HDAAEL>2.0.CO;2 article 2000 ftubristolcris https://doi.org/10.1130/0091-7613(2000)28<87:HDAAEL>2.0.CO;2 2024-04-09T23:49:47Z The interplay between evolution, paleoecology, and environmental change is examined in a geochemical study of a group of Eocene planktonic foraminifera. The hantkeninids, which are well-known biostratigraphic inde × fossils, underwent spectacular long-term evolution in the middle and upper Eocene (49.0–33.7 Ma), a time when major global climate and oceanic changes were occurring. We use oxygen and carbon isotope analysis of their shell calcite to investigate how their habitat changed as they evolved. The hantkeninids originated in a deep-water oxygen-minimum environment, but migrated into fully oxygenated near-surface waters as global temperatures decreased and water-column stratification declined. This change in depth ecology coincided with pronounced morphological evolution, involving changes in chamber shape and degree of inflation, and modification of the primary aperture. These developments are considered to be adaptations to a near-surface habitat. Article in Journal/Newspaper Planktonic foraminifera University of Bristol: Bristol Research |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
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ftubristolcris |
language |
English |
description |
The interplay between evolution, paleoecology, and environmental change is examined in a geochemical study of a group of Eocene planktonic foraminifera. The hantkeninids, which are well-known biostratigraphic inde × fossils, underwent spectacular long-term evolution in the middle and upper Eocene (49.0–33.7 Ma), a time when major global climate and oceanic changes were occurring. We use oxygen and carbon isotope analysis of their shell calcite to investigate how their habitat changed as they evolved. The hantkeninids originated in a deep-water oxygen-minimum environment, but migrated into fully oxygenated near-surface waters as global temperatures decreased and water-column stratification declined. This change in depth ecology coincided with pronounced morphological evolution, involving changes in chamber shape and degree of inflation, and modification of the primary aperture. These developments are considered to be adaptations to a near-surface habitat. |
format |
Article in Journal/Newspaper |
author |
Coxall, HK Pearson, PN Shackleton, NJ Hall, MA |
spellingShingle |
Coxall, HK Pearson, PN Shackleton, NJ Hall, MA Hantkeninid depth adaptation: an evolving life-strategy in a changing ocean |
author_facet |
Coxall, HK Pearson, PN Shackleton, NJ Hall, MA |
author_sort |
Coxall, HK |
title |
Hantkeninid depth adaptation: an evolving life-strategy in a changing ocean |
title_short |
Hantkeninid depth adaptation: an evolving life-strategy in a changing ocean |
title_full |
Hantkeninid depth adaptation: an evolving life-strategy in a changing ocean |
title_fullStr |
Hantkeninid depth adaptation: an evolving life-strategy in a changing ocean |
title_full_unstemmed |
Hantkeninid depth adaptation: an evolving life-strategy in a changing ocean |
title_sort |
hantkeninid depth adaptation: an evolving life-strategy in a changing ocean |
publishDate |
2000 |
url |
https://hdl.handle.net/1983/248487cb-6abd-4041-a031-c9fa4e6ec332 https://research-information.bris.ac.uk/en/publications/248487cb-6abd-4041-a031-c9fa4e6ec332 https://doi.org/10.1130/0091-7613(2000)28<87:HDAAEL>2.0.CO;2 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Coxall , HK , Pearson , PN , Shackleton , NJ & Hall , MA 2000 , ' Hantkeninid depth adaptation : an evolving life-strategy in a changing ocean ' , Geology , vol. 28 , no. 1 , pp. 87-90 . https://doi.org/10.1130/0091-7613(2000)28<87:HDAAEL>2.0.CO;2 |
op_relation |
https://research-information.bris.ac.uk/en/publications/248487cb-6abd-4041-a031-c9fa4e6ec332 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1130/0091-7613(2000)28<87:HDAAEL>2.0.CO;2 |
_version_ |
1797568248322981888 |