Growth Dynamics of Australia's Polar Dinosaurs

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dc.contributor.authorWoodward, Holly Nen_ZA
dc.contributor.authorRich, Thomas Hen_ZA
dc.contributor.authorChinsamy, Anusuyaen_ZA
dc.contributor.authorVickers-Rich, Patriciaen_ZA
dc.date.accessioned2016-01-02T05:09:14Z
dc.date.available2016-01-02T05:09:14Z
dc.date.issued2011en_ZA
dc.description.abstractAnalysis 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.en_ZA
dc.identifier.apacitationWoodward, H. N., Rich, T. H., Chinsamy, A., & Vickers-Rich, P. (2011). Growth Dynamics of Australia's Polar Dinosaurs. <i>PLoS One</i>, http://hdl.handle.net/11427/16193en_ZA
dc.identifier.chicagocitationWoodward, Holly N, Thomas H Rich, Anusuya Chinsamy, and Patricia Vickers-Rich "Growth Dynamics of Australia's Polar Dinosaurs." <i>PLoS One</i> (2011) http://hdl.handle.net/11427/16193en_ZA
dc.identifier.citationWoodward, H. N., Rich, T. H., Chinsamy, A., & Vickers-Rich, P. (2011). Growth dynamics of Australia’s polar dinosaurs. PLoS One, 6(8), e23339. doi:10.1371/journal.pone.0023339en_ZA
dc.identifier.ris TY - Journal Article AU - Woodward, Holly N AU - Rich, Thomas H AU - Chinsamy, Anusuya AU - Vickers-Rich, Patricia AB - 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. DA - 2011 DB - OpenUCT DO - 10.1371/journal.pone.0023339 DP - University of Cape Town J1 - PLoS One LK - https://open.uct.ac.za PB - University of Cape Town PY - 2011 T1 - Growth Dynamics of Australia's Polar Dinosaurs TI - Growth Dynamics of Australia's Polar Dinosaurs UR - http://hdl.handle.net/11427/16193 ER - en_ZA
dc.identifier.urihttp://dx.doi.org/10.1371/journal.pone.0023339en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/16193
dc.identifier.vancouvercitationWoodward HN, Rich TH, Chinsamy A, Vickers-Rich P. Growth Dynamics of Australia's Polar Dinosaurs. PLoS One. 2011; http://hdl.handle.net/11427/16193.en_ZA
dc.language.isoengen_ZA
dc.publisherPublic Library of Scienceen_ZA
dc.publisher.departmentDepartment of Biological Sciencesen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.rightsThis 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.en_ZA
dc.rights.holder© 2011 Woodward et alen_ZA
dc.rights.urihttp://creativecommons.org/licenses/by/4.0en_ZA
dc.sourcePLoS Oneen_ZA
dc.source.urihttp://journals.plos.org/plosoneen_ZA
dc.subject.otherDinosaursen_ZA
dc.subject.otherFemuren_ZA
dc.subject.otherMicrostructureen_ZA
dc.subject.otherTibiaen_ZA
dc.subject.otherFossilsen_ZA
dc.subject.otherHibernationen_ZA
dc.subject.otherLaboratory glasswareen_ZA
dc.subject.otherCretaceous perioden_ZA
dc.titleGrowth Dynamics of Australia's Polar Dinosaursen_ZA
dc.typeJournal Articleen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceArticleen_ZA
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