Cladogenetic, extinction and survivorship patterns from a lineage phylogeny: The Paleogene planktonic foraminifera
Paleontological analyses of patterns of evolution at the 'species level' too often make uncritical use of taxonomic range data gathered primarily for biostratigraphic purposes. In this contributon, taxonomic evolution is studied from a stratophenetic lineage phylogeny of Paleogne planktoni...
Published in: | Micropaleontology |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
American Museum of Natural History
1996
|
Subjects: | |
Online Access: | https://orca.cardiff.ac.uk/id/eprint/15252/ http://www.jstor.org/stable/1485869 https://doi.org/10.2307/1485869 |
id |
ftunivcardiff:oai:https://orca.cardiff.ac.uk:15252 |
---|---|
record_format |
openpolar |
spelling |
ftunivcardiff:oai:https://orca.cardiff.ac.uk:15252 2023-05-15T18:00:19+02:00 Cladogenetic, extinction and survivorship patterns from a lineage phylogeny: The Paleogene planktonic foraminifera Pearson, Paul Nicholas 1996-06 https://orca.cardiff.ac.uk/id/eprint/15252/ http://www.jstor.org/stable/1485869 https://doi.org/10.2307/1485869 unknown American Museum of Natural History Pearson, Paul Nicholas https://orca.cardiff.ac.uk/view/cardiffauthors/A0179150.html orcid:0000-0003-4628-9818 orcid:0000-0003-4628-9818 1996. Cladogenetic, extinction and survivorship patterns from a lineage phylogeny: The Paleogene planktonic foraminifera. Micropaleontology 42 (2) , pp. 179-188. 10.2307/1485869 https://doi.org/10.2307/1485869 doi:10.2307/1485869 QE Geology Article PeerReviewed 1996 ftunivcardiff https://doi.org/10.2307/1485869 2022-10-20T22:35:36Z Paleontological analyses of patterns of evolution at the 'species level' too often make uncritical use of taxonomic range data gathered primarily for biostratigraphic purposes. In this contributon, taxonomic evolution is studied from a stratophenetic lineage phylogeny of Paleogne planktonic foraminifera. This phylogeny, previously published in Micropaleontology, was constructed to eliminate 'pseudospeciation' and 'pseudoextinction' from the record, leaving only genuine cladogenesis (lineage branching) and terminal extinction. The phylogeny thus obtained obeys a valid cladistic geometry. Following the Cretaceous/Paleogene boundary extinctions, the planktonic foraminifera made a rapid initial recovery in less than one million years to a more stable level of diversity. Lineage diversity and morphologic disparity ultimately reached a maximum in the middle Eocene. Diversity fluctuations in the group during most of the Paleogene result primarily from the expansion and decline of one sub-clade, the muricates. Rates of cladogenesis and extinction in the planktonic foraminifera as a whole did not covary. Cladogenesis peaked in the earliest Paleocene and the late early Eocene. Enhanced extinction occurred in the mid-Paleocene and through the middle Eocene. Neither the Paleocene/Eocene nor Eocene/Oligocene boundaries were exceptional events in the evolutionary history of planktonic foraminifera. Survivorship curves, both uncorrected and normalised to variations in the general extinction probability (the 'corrected survivorship score' technique) are approximately straight, in contrast with the case of morphospecies longevities, which show a strongly age-dependent pattern (Pearson 1992). This suggests that the latter pattern is largely an artifact of taxonomic data gathering. A further interesting feature is evident from the lineage phylogeny: those lineages which terminate in branching have a mean duration which is less than half that of those which terminate in extinction, pointing to a strongly radiative pattern of ... Article in Journal/Newspaper Planktonic foraminifera Cardiff University: ORCA (Online Research @ Cardiff) Micropaleontology 42 2 179 |
institution |
Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
unknown |
topic |
QE Geology |
spellingShingle |
QE Geology Pearson, Paul Nicholas Cladogenetic, extinction and survivorship patterns from a lineage phylogeny: The Paleogene planktonic foraminifera |
topic_facet |
QE Geology |
description |
Paleontological analyses of patterns of evolution at the 'species level' too often make uncritical use of taxonomic range data gathered primarily for biostratigraphic purposes. In this contributon, taxonomic evolution is studied from a stratophenetic lineage phylogeny of Paleogne planktonic foraminifera. This phylogeny, previously published in Micropaleontology, was constructed to eliminate 'pseudospeciation' and 'pseudoextinction' from the record, leaving only genuine cladogenesis (lineage branching) and terminal extinction. The phylogeny thus obtained obeys a valid cladistic geometry. Following the Cretaceous/Paleogene boundary extinctions, the planktonic foraminifera made a rapid initial recovery in less than one million years to a more stable level of diversity. Lineage diversity and morphologic disparity ultimately reached a maximum in the middle Eocene. Diversity fluctuations in the group during most of the Paleogene result primarily from the expansion and decline of one sub-clade, the muricates. Rates of cladogenesis and extinction in the planktonic foraminifera as a whole did not covary. Cladogenesis peaked in the earliest Paleocene and the late early Eocene. Enhanced extinction occurred in the mid-Paleocene and through the middle Eocene. Neither the Paleocene/Eocene nor Eocene/Oligocene boundaries were exceptional events in the evolutionary history of planktonic foraminifera. Survivorship curves, both uncorrected and normalised to variations in the general extinction probability (the 'corrected survivorship score' technique) are approximately straight, in contrast with the case of morphospecies longevities, which show a strongly age-dependent pattern (Pearson 1992). This suggests that the latter pattern is largely an artifact of taxonomic data gathering. A further interesting feature is evident from the lineage phylogeny: those lineages which terminate in branching have a mean duration which is less than half that of those which terminate in extinction, pointing to a strongly radiative pattern of ... |
format |
Article in Journal/Newspaper |
author |
Pearson, Paul Nicholas |
author_facet |
Pearson, Paul Nicholas |
author_sort |
Pearson, Paul Nicholas |
title |
Cladogenetic, extinction and survivorship patterns from a lineage phylogeny: The Paleogene planktonic foraminifera |
title_short |
Cladogenetic, extinction and survivorship patterns from a lineage phylogeny: The Paleogene planktonic foraminifera |
title_full |
Cladogenetic, extinction and survivorship patterns from a lineage phylogeny: The Paleogene planktonic foraminifera |
title_fullStr |
Cladogenetic, extinction and survivorship patterns from a lineage phylogeny: The Paleogene planktonic foraminifera |
title_full_unstemmed |
Cladogenetic, extinction and survivorship patterns from a lineage phylogeny: The Paleogene planktonic foraminifera |
title_sort |
cladogenetic, extinction and survivorship patterns from a lineage phylogeny: the paleogene planktonic foraminifera |
publisher |
American Museum of Natural History |
publishDate |
1996 |
url |
https://orca.cardiff.ac.uk/id/eprint/15252/ http://www.jstor.org/stable/1485869 https://doi.org/10.2307/1485869 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
Pearson, Paul Nicholas https://orca.cardiff.ac.uk/view/cardiffauthors/A0179150.html orcid:0000-0003-4628-9818 orcid:0000-0003-4628-9818 1996. Cladogenetic, extinction and survivorship patterns from a lineage phylogeny: The Paleogene planktonic foraminifera. Micropaleontology 42 (2) , pp. 179-188. 10.2307/1485869 https://doi.org/10.2307/1485869 doi:10.2307/1485869 |
op_doi |
https://doi.org/10.2307/1485869 |
container_title |
Micropaleontology |
container_volume |
42 |
container_issue |
2 |
container_start_page |
179 |
_version_ |
1766169363387252736 |