Evolutionary Transition in the Late Neogene Planktonic Foraminiferal Genus Truncorotalia

Title
Evolutionary Transition in the Late Neogene Planktonic Foraminiferal Genus Truncorotalia
Publication Date
2018-10-26
Author(s)
Bicknell, Russell D C
( author )
OrcID: https://orcid.org/0000-0001-8541-9035
Email: rbickne2@une.edu.au
UNE Id une-id:rbickne2
Collins, Katie S
Crundwell, Martin
Hannah, Michael
Crampton, James S
Campione, Nicolas E
( author )
OrcID: https://orcid.org/0000-0002-4205-9794
Email: ncampion@une.edu.au
UNE Id une-id:ncampion
Type of document
Journal Article
Language
en
Entity Type
Publication
Publisher
Cell Press
Place of publication
United States of America
DOI
10.1016/j.isci.2018.09.013
UNE publication id
une:1959.11/26422
Abstract
The fossil record provides empirical patterns of morphological change through time and is central to the study of the tempo and mode of evolution. Here we apply likelihood-based time-series analyses to the near-continuous fossil record of Neogene planktonic foraminifera and reveal a morphological shift along the Truncorotalia lineage. Based on a geometric morphometric dataset of 1,459 specimens, spanning 5.9-4.5 Ma, we recover a shift in the mode of evolution from a disparate latest Miocene morphospace to a highly constrained early Pliocene morphospace. Our recovered dynamics are consistent with those stipulated by Simpson's quantum evolution and Eldredge-Gould's punctuated equilibria and supports previous suppositions that even within a single lineage, evolutionary dynamics require a multi-parameter model framework to describe. We show that foraminiferal lineages are not necessarily gradual and can experience significant and rapid transitions along their evolutionary trajectories and reaffirm the utility of multivariate datasets for their future research.
Link
Citation
iScience, v.8, p. 295-303
ISSN
2589-0042
Pubmed ID
30342972
Start page
295
End page
303
Rights
Attribution 4.0 International

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