Radiation of Cenozoic Planktonic Foraminifera
The general aspects of planktonic foraminiferal radiation during the Cenozoic are shown by the distributional patterns of several morphotypic groups. There were two major radiations, one occurring during the Paleogene, the other during the Neogene. The radiations followed severe reductions in divers...
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Oxford University Press
1969
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Online Access: | http://sysbio.oxfordjournals.org/cgi/content/short/18/2/154 https://doi.org/10.2307/2412601 |
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fthighwire:oai:open-archive.highwire.org:sysbio:18/2/154 2023-05-15T18:00:47+02:00 Radiation of Cenozoic Planktonic Foraminifera Cifelli, Richard 1969-06-01 00:00:00.0 text/html http://sysbio.oxfordjournals.org/cgi/content/short/18/2/154 https://doi.org/10.2307/2412601 en eng Oxford University Press http://sysbio.oxfordjournals.org/cgi/content/short/18/2/154 http://dx.doi.org/10.2307/2412601 Copyright (C) 1969, Society of Systematic Biologists Articles TEXT 1969 fthighwire https://doi.org/10.2307/2412601 2015-02-28T18:17:06Z The general aspects of planktonic foraminiferal radiation during the Cenozoic are shown by the distributional patterns of several morphotypic groups. There were two major radiations, one occurring during the Paleogene, the other during the Neogene. The radiations followed severe reductions in diversity which occurred at the close of the Cretaceous and again during the mid-Tertiary. Distributional patterns are iterative, and the Neogene radiation is essentially a repetition of what occurred during the Paleogene. According to the present interpretation, the ilerative patterns reflect major changes in the dynamic structure of surface waters. By analogy with the distribution of the modern fauna, it is suggested that thermal barriers were degraded during times of reduction and the oceans were uniformly cool. During the radiations thermal gradients were restored and the structure of the surface waters was essentially as it is today. Text Planktonic foraminifera HighWire Press (Stanford University) Systematic Zoology 18 2 154 |
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HighWire Press (Stanford University) |
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English |
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Articles |
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Articles Cifelli, Richard Radiation of Cenozoic Planktonic Foraminifera |
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Articles |
description |
The general aspects of planktonic foraminiferal radiation during the Cenozoic are shown by the distributional patterns of several morphotypic groups. There were two major radiations, one occurring during the Paleogene, the other during the Neogene. The radiations followed severe reductions in diversity which occurred at the close of the Cretaceous and again during the mid-Tertiary. Distributional patterns are iterative, and the Neogene radiation is essentially a repetition of what occurred during the Paleogene. According to the present interpretation, the ilerative patterns reflect major changes in the dynamic structure of surface waters. By analogy with the distribution of the modern fauna, it is suggested that thermal barriers were degraded during times of reduction and the oceans were uniformly cool. During the radiations thermal gradients were restored and the structure of the surface waters was essentially as it is today. |
format |
Text |
author |
Cifelli, Richard |
author_facet |
Cifelli, Richard |
author_sort |
Cifelli, Richard |
title |
Radiation of Cenozoic Planktonic Foraminifera |
title_short |
Radiation of Cenozoic Planktonic Foraminifera |
title_full |
Radiation of Cenozoic Planktonic Foraminifera |
title_fullStr |
Radiation of Cenozoic Planktonic Foraminifera |
title_full_unstemmed |
Radiation of Cenozoic Planktonic Foraminifera |
title_sort |
radiation of cenozoic planktonic foraminifera |
publisher |
Oxford University Press |
publishDate |
1969 |
url |
http://sysbio.oxfordjournals.org/cgi/content/short/18/2/154 https://doi.org/10.2307/2412601 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
http://sysbio.oxfordjournals.org/cgi/content/short/18/2/154 http://dx.doi.org/10.2307/2412601 |
op_rights |
Copyright (C) 1969, Society of Systematic Biologists |
op_doi |
https://doi.org/10.2307/2412601 |
container_title |
Systematic Zoology |
container_volume |
18 |
container_issue |
2 |
container_start_page |
154 |
_version_ |
1766170004740374528 |