Supplementary section S4 from The remarkable convergence of skull shape in crocodilians and toothed whales
The striking resemblance of long-snouted aquatic mammals and reptiles has long been considered an example of morphological convergence, yet the true cause of this similarity remains untested. We addressed this deficit through three-dimensional morphometric analysis of the full diversity of crocodili...
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ftdatacite:10.6084/m9.figshare.4680982.v1 2023-05-15T18:33:25+02:00 Supplementary section S4 from The remarkable convergence of skull shape in crocodilians and toothed whales McCurry, Matthew R. Evans, Alistair R. Fitzgerald, Erich M. G. Adams, Justin W. Clausen, Philip D. McHenry, Colin R. 2017 https://dx.doi.org/10.6084/m9.figshare.4680982.v1 https://rs.figshare.com/articles/journal_contribution/Supplementary_section_S4_from_The_remarkable_convergence_of_skull_shape_in_crocodilians_and_toothed_whales/4680982/1 unknown The Royal Society https://dx.doi.org/10.1098/rspb.2016.2348 https://dx.doi.org/10.6084/m9.figshare.4680982 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Evolutionary Biology FOS Biological sciences Ecology Text article-journal Journal contribution ScholarlyArticle 2017 ftdatacite https://doi.org/10.6084/m9.figshare.4680982.v1 https://doi.org/10.1098/rspb.2016.2348 https://doi.org/10.6084/m9.figshare.4680982 2021-11-05T12:55:41Z The striking resemblance of long-snouted aquatic mammals and reptiles has long been considered an example of morphological convergence, yet the true cause of this similarity remains untested. We addressed this deficit through three-dimensional morphometric analysis of the full diversity of crocodilian and toothed whale (Odontoceti) skull shapes. Our focus on biomechanically important aspects of shape allowed us to overcome difficulties involved in comparing mammals and reptiles, which have fundamental differences in the number and position of skull bones. We examined whether diet, habitat and prey size correlated with skull shape using phylogenetically informed statistical procedures. Crocodilians and toothed whales have a similar range of skull shapes, varying from extremely short and broad to extremely elongate. This spectrum of shapes represented more of the total variation in our dataset than between phylogenetic groups. The most elongate species (river dolphins and gharials) are extremely convergent in skull shape, clustering outside of the range of the other taxa. Our results suggest the remarkable convergence between long-snouted river dolphins and gharials is driven by diet rather than physical factors intrinsic to riverine environments. Despite diverging approximately 288 million years ago, crocodilians and odontocetes have evolved a remarkably similar morphological solution to feeding on similar prey. Text toothed whale toothed whales DataCite Metadata Store (German National Library of Science and Technology) |
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Evolutionary Biology FOS Biological sciences Ecology |
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Evolutionary Biology FOS Biological sciences Ecology McCurry, Matthew R. Evans, Alistair R. Fitzgerald, Erich M. G. Adams, Justin W. Clausen, Philip D. McHenry, Colin R. Supplementary section S4 from The remarkable convergence of skull shape in crocodilians and toothed whales |
topic_facet |
Evolutionary Biology FOS Biological sciences Ecology |
description |
The striking resemblance of long-snouted aquatic mammals and reptiles has long been considered an example of morphological convergence, yet the true cause of this similarity remains untested. We addressed this deficit through three-dimensional morphometric analysis of the full diversity of crocodilian and toothed whale (Odontoceti) skull shapes. Our focus on biomechanically important aspects of shape allowed us to overcome difficulties involved in comparing mammals and reptiles, which have fundamental differences in the number and position of skull bones. We examined whether diet, habitat and prey size correlated with skull shape using phylogenetically informed statistical procedures. Crocodilians and toothed whales have a similar range of skull shapes, varying from extremely short and broad to extremely elongate. This spectrum of shapes represented more of the total variation in our dataset than between phylogenetic groups. The most elongate species (river dolphins and gharials) are extremely convergent in skull shape, clustering outside of the range of the other taxa. Our results suggest the remarkable convergence between long-snouted river dolphins and gharials is driven by diet rather than physical factors intrinsic to riverine environments. Despite diverging approximately 288 million years ago, crocodilians and odontocetes have evolved a remarkably similar morphological solution to feeding on similar prey. |
format |
Text |
author |
McCurry, Matthew R. Evans, Alistair R. Fitzgerald, Erich M. G. Adams, Justin W. Clausen, Philip D. McHenry, Colin R. |
author_facet |
McCurry, Matthew R. Evans, Alistair R. Fitzgerald, Erich M. G. Adams, Justin W. Clausen, Philip D. McHenry, Colin R. |
author_sort |
McCurry, Matthew R. |
title |
Supplementary section S4 from The remarkable convergence of skull shape in crocodilians and toothed whales |
title_short |
Supplementary section S4 from The remarkable convergence of skull shape in crocodilians and toothed whales |
title_full |
Supplementary section S4 from The remarkable convergence of skull shape in crocodilians and toothed whales |
title_fullStr |
Supplementary section S4 from The remarkable convergence of skull shape in crocodilians and toothed whales |
title_full_unstemmed |
Supplementary section S4 from The remarkable convergence of skull shape in crocodilians and toothed whales |
title_sort |
supplementary section s4 from the remarkable convergence of skull shape in crocodilians and toothed whales |
publisher |
The Royal Society |
publishDate |
2017 |
url |
https://dx.doi.org/10.6084/m9.figshare.4680982.v1 https://rs.figshare.com/articles/journal_contribution/Supplementary_section_S4_from_The_remarkable_convergence_of_skull_shape_in_crocodilians_and_toothed_whales/4680982/1 |
genre |
toothed whale toothed whales |
genre_facet |
toothed whale toothed whales |
op_relation |
https://dx.doi.org/10.1098/rspb.2016.2348 https://dx.doi.org/10.6084/m9.figshare.4680982 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.4680982.v1 https://doi.org/10.1098/rspb.2016.2348 https://doi.org/10.6084/m9.figshare.4680982 |
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