Feeding biomechanics in Acanthostega and across the fish - tetrapod transition
Acanthostega is one of the earliest and most primitive limbed vertebrates. Its numerous fish-like features indicate a primarily aquatic lifestyle, yet cranial suture morphology suggests that its skull is more similar to those of terrestrial taxa. Here, we apply geometric morphometrics and two-dimens...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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Online Access: | https://hdl.handle.net/1983/155f9c57-46dd-4ccf-937d-94c765b96376 https://research-information.bris.ac.uk/en/publications/155f9c57-46dd-4ccf-937d-94c765b96376 https://doi.org/10.1098/rspb.2013.2689 |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/155f9c57-46dd-4ccf-937d-94c765b96376 2024-01-28T10:05:28+01:00 Feeding biomechanics in Acanthostega and across the fish - tetrapod transition Neenan, James M. Ruta, Marcello Clack, Jennifer A. Rayfield, Emily J. 2014-04-22 https://hdl.handle.net/1983/155f9c57-46dd-4ccf-937d-94c765b96376 https://research-information.bris.ac.uk/en/publications/155f9c57-46dd-4ccf-937d-94c765b96376 https://doi.org/10.1098/rspb.2013.2689 eng eng info:eu-repo/semantics/restrictedAccess Neenan , J M , Ruta , M , Clack , J A & Rayfield , E J 2014 , ' Feeding biomechanics in Acanthostega and across the fish - tetrapod transition ' , Proceedings of the Royal Society B: Biological Sciences , vol. 281 , no. 1781 , 20132689 . https://doi.org/10.1098/rspb.2013.2689 Acanthostega feeding finite-element analysis geometric morphometrics phylogeny fin-limb transition FINITE-ELEMENT-ANALYSIS EAST GREENLAND SUTURE MORPHOLOGY DEVONIAN TETRAPOD BONE STRAIN PERFORMANCE EVOLUTION ANATOMY JAWS ICHTHYOSTEGA article 2014 ftubristolcris https://doi.org/10.1098/rspb.2013.2689 2024-01-04T23:41:49Z Acanthostega is one of the earliest and most primitive limbed vertebrates. Its numerous fish-like features indicate a primarily aquatic lifestyle, yet cranial suture morphology suggests that its skull is more similar to those of terrestrial taxa. Here, we apply geometric morphometrics and two-dimensional finite-element analysis to the lower jaws of Acanthostega and 22 other tetrapodomorph taxa in order to quantify morphological and functional changes across the fish-tetrapod transition. The jaw of Acanthostega is similar to that of certain tetrapodomorph fish and transitional Devonian taxa both morphologically (as indicated by its proximity to those taxa in morphospace) and functionally (as indicated by the distribution of stress values and relative magnitude of bite force). Our results suggest a slow tempo of morphological and biomechanical changes in the transition from Devonian tetrapod jaws to aquatic/semi-aquatic Carboniferous tetrapod jaws. We conclude that Acanthostega retained a primitively aquatic lifestyle and did not possess cranial adaptations for terrestrial feeding. Article in Journal/Newspaper East Greenland Greenland University of Bristol: Bristol Research Greenland Proceedings of the Royal Society B: Biological Sciences 281 1781 20132689 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
Acanthostega feeding finite-element analysis geometric morphometrics phylogeny fin-limb transition FINITE-ELEMENT-ANALYSIS EAST GREENLAND SUTURE MORPHOLOGY DEVONIAN TETRAPOD BONE STRAIN PERFORMANCE EVOLUTION ANATOMY JAWS ICHTHYOSTEGA |
spellingShingle |
Acanthostega feeding finite-element analysis geometric morphometrics phylogeny fin-limb transition FINITE-ELEMENT-ANALYSIS EAST GREENLAND SUTURE MORPHOLOGY DEVONIAN TETRAPOD BONE STRAIN PERFORMANCE EVOLUTION ANATOMY JAWS ICHTHYOSTEGA Neenan, James M. Ruta, Marcello Clack, Jennifer A. Rayfield, Emily J. Feeding biomechanics in Acanthostega and across the fish - tetrapod transition |
topic_facet |
Acanthostega feeding finite-element analysis geometric morphometrics phylogeny fin-limb transition FINITE-ELEMENT-ANALYSIS EAST GREENLAND SUTURE MORPHOLOGY DEVONIAN TETRAPOD BONE STRAIN PERFORMANCE EVOLUTION ANATOMY JAWS ICHTHYOSTEGA |
description |
Acanthostega is one of the earliest and most primitive limbed vertebrates. Its numerous fish-like features indicate a primarily aquatic lifestyle, yet cranial suture morphology suggests that its skull is more similar to those of terrestrial taxa. Here, we apply geometric morphometrics and two-dimensional finite-element analysis to the lower jaws of Acanthostega and 22 other tetrapodomorph taxa in order to quantify morphological and functional changes across the fish-tetrapod transition. The jaw of Acanthostega is similar to that of certain tetrapodomorph fish and transitional Devonian taxa both morphologically (as indicated by its proximity to those taxa in morphospace) and functionally (as indicated by the distribution of stress values and relative magnitude of bite force). Our results suggest a slow tempo of morphological and biomechanical changes in the transition from Devonian tetrapod jaws to aquatic/semi-aquatic Carboniferous tetrapod jaws. We conclude that Acanthostega retained a primitively aquatic lifestyle and did not possess cranial adaptations for terrestrial feeding. |
format |
Article in Journal/Newspaper |
author |
Neenan, James M. Ruta, Marcello Clack, Jennifer A. Rayfield, Emily J. |
author_facet |
Neenan, James M. Ruta, Marcello Clack, Jennifer A. Rayfield, Emily J. |
author_sort |
Neenan, James M. |
title |
Feeding biomechanics in Acanthostega and across the fish - tetrapod transition |
title_short |
Feeding biomechanics in Acanthostega and across the fish - tetrapod transition |
title_full |
Feeding biomechanics in Acanthostega and across the fish - tetrapod transition |
title_fullStr |
Feeding biomechanics in Acanthostega and across the fish - tetrapod transition |
title_full_unstemmed |
Feeding biomechanics in Acanthostega and across the fish - tetrapod transition |
title_sort |
feeding biomechanics in acanthostega and across the fish - tetrapod transition |
publishDate |
2014 |
url |
https://hdl.handle.net/1983/155f9c57-46dd-4ccf-937d-94c765b96376 https://research-information.bris.ac.uk/en/publications/155f9c57-46dd-4ccf-937d-94c765b96376 https://doi.org/10.1098/rspb.2013.2689 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland Greenland |
genre_facet |
East Greenland Greenland |
op_source |
Neenan , J M , Ruta , M , Clack , J A & Rayfield , E J 2014 , ' Feeding biomechanics in Acanthostega and across the fish - tetrapod transition ' , Proceedings of the Royal Society B: Biological Sciences , vol. 281 , no. 1781 , 20132689 . https://doi.org/10.1098/rspb.2013.2689 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1098/rspb.2013.2689 |
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Proceedings of the Royal Society B: Biological Sciences |
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281 |
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1781 |
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20132689 |
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