Growth dynamics of Australia's polar dinosaurs
Analysis of bone microstructure in ornithopod and theropod dinosaurs from Victoria, Australia, documents ontogenetic changes, providing insight into the dinosaurs' successful habitation of Cretaceous Antarctic environments. Woven-fibered bone tissue in the smallest specimens indicates rapid gro...
Published in: | PLoS ONE |
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2011
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Online Access: | http://hdl.handle.net/1959.3/435173 https://doi.org/10.1371/journal.pone.0023339 |
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ftswinburne:tle:88dad059-ae9a-4bc1-91c9-0a63285b878f:28f49f06-0da8-44be-9edc-ad1dd0a9c582:1 2023-06-11T04:05:13+02:00 Growth dynamics of Australia's polar dinosaurs Woodward, Holly N. Rich, Thomas H. Chinsamy, Anusuya Vickers-Rich, Patricia Swinburne University of Technology 2011 http://hdl.handle.net/1959.3/435173 https://doi.org/10.1371/journal.pone.0023339 unknown Public Library of Science (PLoS) http://hdl.handle.net/1959.3/435173 https://doi.org/10.1371/journal.pone.0023339 Copyright © 2011 Woodward et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. PLoS One, Vol. 6, no. 8 (Aug 2011), article no. e23339 Journal article 2011 ftswinburne https://doi.org/10.1371/journal.pone.0023339 2023-05-01T22:30:21Z Analysis of bone microstructure in ornithopod and theropod dinosaurs from Victoria, Australia, documents ontogenetic changes, providing insight into the dinosaurs' successful habitation of Cretaceous Antarctic environments. Woven-fibered bone tissue in the smallest specimens indicates rapid growth rates during early ontogeny. Later ontogeny is marked by parallel-fibered tissue, suggesting reduced growth rates approaching skeletal maturity. Bone microstructure similarities between the ornithopods and theropods, including the presence of LAGs in each group, suggest there is no osteohistologic evidence supporting the hypothesis that polar theropods hibernated seasonally. Results instead suggest high-latitude dinosaurs had growth trajectories similar to their lower-latitude relatives and thus, rapid early ontogenetic growth and the cyclical suspensions of growth inherent in the theropod and ornithopod lineages enabled them to successfully exploit polar regions. Article in Journal/Newspaper Antarc* Antarctic Swinburne University of Technology: Swinburne Research Bank Antarctic PLoS ONE 6 8 e23339 |
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Open Polar |
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Swinburne University of Technology: Swinburne Research Bank |
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ftswinburne |
language |
unknown |
description |
Analysis of bone microstructure in ornithopod and theropod dinosaurs from Victoria, Australia, documents ontogenetic changes, providing insight into the dinosaurs' successful habitation of Cretaceous Antarctic environments. Woven-fibered bone tissue in the smallest specimens indicates rapid growth rates during early ontogeny. Later ontogeny is marked by parallel-fibered tissue, suggesting reduced growth rates approaching skeletal maturity. Bone microstructure similarities between the ornithopods and theropods, including the presence of LAGs in each group, suggest there is no osteohistologic evidence supporting the hypothesis that polar theropods hibernated seasonally. Results instead suggest high-latitude dinosaurs had growth trajectories similar to their lower-latitude relatives and thus, rapid early ontogenetic growth and the cyclical suspensions of growth inherent in the theropod and ornithopod lineages enabled them to successfully exploit polar regions. |
author2 |
Swinburne University of Technology |
format |
Article in Journal/Newspaper |
author |
Woodward, Holly N. Rich, Thomas H. Chinsamy, Anusuya Vickers-Rich, Patricia |
spellingShingle |
Woodward, Holly N. Rich, Thomas H. Chinsamy, Anusuya Vickers-Rich, Patricia Growth dynamics of Australia's polar dinosaurs |
author_facet |
Woodward, Holly N. Rich, Thomas H. Chinsamy, Anusuya Vickers-Rich, Patricia |
author_sort |
Woodward, Holly N. |
title |
Growth dynamics of Australia's polar dinosaurs |
title_short |
Growth dynamics of Australia's polar dinosaurs |
title_full |
Growth dynamics of Australia's polar dinosaurs |
title_fullStr |
Growth dynamics of Australia's polar dinosaurs |
title_full_unstemmed |
Growth dynamics of Australia's polar dinosaurs |
title_sort |
growth dynamics of australia's polar dinosaurs |
publisher |
Public Library of Science (PLoS) |
publishDate |
2011 |
url |
http://hdl.handle.net/1959.3/435173 https://doi.org/10.1371/journal.pone.0023339 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
PLoS One, Vol. 6, no. 8 (Aug 2011), article no. e23339 |
op_relation |
http://hdl.handle.net/1959.3/435173 https://doi.org/10.1371/journal.pone.0023339 |
op_rights |
Copyright © 2011 Woodward et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_doi |
https://doi.org/10.1371/journal.pone.0023339 |
container_title |
PLoS ONE |
container_volume |
6 |
container_issue |
8 |
container_start_page |
e23339 |
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1768373044540080128 |