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...
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Online Access: | http://hdl.handle.net/11427/16193 https://doi.org/10.1371/journal.pone.0023339 https://open.uct.ac.za/bitstream/11427/16193/1/Woodward_Australias_Polar_Dinosaurs_2011.pdf |
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ftunivcapetownir:oai:localhost:11427/16193 2023-05-15T13:46:03+02:00 Growth Dynamics of Australia's Polar Dinosaurs Woodward, Holly N Rich, Thomas H Chinsamy, Anusuya Vickers-Rich, Patricia 2011 application/pdf http://hdl.handle.net/11427/16193 https://doi.org/10.1371/journal.pone.0023339 https://open.uct.ac.za/bitstream/11427/16193/1/Woodward_Australias_Polar_Dinosaurs_2011.pdf eng eng Public Library of Science University of Cape Town Faculty of Science Department of Biological Sciences http://dx.doi.org/10.1371/journal.pone.0023339 http://hdl.handle.net/11427/16193 https://open.uct.ac.za/bitstream/11427/16193/1/Woodward_Australias_Polar_Dinosaurs_2011.pdf 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. http://creativecommons.org/licenses/by/4.0 © 2011 Woodward et al CC-BY PLoS One http://journals.plos.org/plosone Dinosaurs Femur Microstructure Tibia Fossils Hibernation Laboratory glassware Cretaceous period Journal Article 2011 ftunivcapetownir https://doi.org/10.1371/journal.pone.0023339 2022-09-13T05:58:04Z 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 University of Cape Town: OpenUCT Antarctic PLoS ONE 6 8 e23339 |
institution |
Open Polar |
collection |
University of Cape Town: OpenUCT |
op_collection_id |
ftunivcapetownir |
language |
English |
topic |
Dinosaurs Femur Microstructure Tibia Fossils Hibernation Laboratory glassware Cretaceous period |
spellingShingle |
Dinosaurs Femur Microstructure Tibia Fossils Hibernation Laboratory glassware Cretaceous period Woodward, Holly N Rich, Thomas H Chinsamy, Anusuya Vickers-Rich, Patricia Growth Dynamics of Australia's Polar Dinosaurs |
topic_facet |
Dinosaurs Femur Microstructure Tibia Fossils Hibernation Laboratory glassware Cretaceous period |
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. |
format |
Article in Journal/Newspaper |
author |
Woodward, Holly N Rich, Thomas H Chinsamy, Anusuya Vickers-Rich, Patricia |
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 |
publishDate |
2011 |
url |
http://hdl.handle.net/11427/16193 https://doi.org/10.1371/journal.pone.0023339 https://open.uct.ac.za/bitstream/11427/16193/1/Woodward_Australias_Polar_Dinosaurs_2011.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
PLoS One http://journals.plos.org/plosone |
op_relation |
http://dx.doi.org/10.1371/journal.pone.0023339 http://hdl.handle.net/11427/16193 https://open.uct.ac.za/bitstream/11427/16193/1/Woodward_Australias_Polar_Dinosaurs_2011.pdf |
op_rights |
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. http://creativecommons.org/licenses/by/4.0 © 2011 Woodward et al |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0023339 |
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PLoS ONE |
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6 |
container_issue |
8 |
container_start_page |
e23339 |
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1766235383144644608 |