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https://hdl.handle.net/1959.11/17105
Title: | Three dimensional digital reconstruction of the jaw adductor musculature of the extinct marsupial giant 'Diprotodon optatum' | Contributor(s): | Sharp, Alana (author) | Publication Date: | 2014 | Open Access: | Yes | DOI: | 10.7717/peerj.514 | Handle Link: | https://hdl.handle.net/1959.11/17105 | Abstract: | The morphology and arrangement of the jaw adductor muscles in vertebrates reflects masticatory style and feeding processes, diet and ecology. However, gross muscle anatomy is rarely preserved in fossils and is, therefore, heavily dependent on reconstructions. An undeformed skull of the extinct marsupial, 'Diprotodon optatum', recovered from Pleistocene sediments at Bacchus Marsh in Victoria, represents the most complete and best preserved specimen of the species offering a unique opportunity to investigate functional anatomy. Computed tomography (CT) scans and digital reconstructions make it possible to visualise internal cranial anatomy and predict location and morphology of soft tissues, including muscles. This study resulted in a 3D digital reconstruction of the jaw adductormusculature of 'Diprotodon', revealing that the arrangement of muscles is similar to that of kangaroos and that the muscle actions were predominantly vertical. 3D digital muscle reconstructions provide considerable advantages over 2D reconstructions for the visualisation of the spatial arrangement of the individual muscles and the measurement of muscle properties (length, force vectors and volume). Such digital models can further be used to estimatemuscle loads and attachment sites for biomechanical analyses. | Publication Type: | Journal Article | Source of Publication: | PeerJ, v.2, p. 1-19 | Publisher: | PeerJ, Ltd | Place of Publication: | United Kingdom | ISSN: | 2167-8359 | Fields of Research (FoR) 2008: | 040308 Palaeontology (incl Palynology) 060807 Animal Structure and Function 060809 Vertebrate Biology |
Fields of Research (FoR) 2020: | 370506 Palaeontology (incl. palynology) 310911 Animal structure and function 310914 Vertebrate biology |
Socio-Economic Objective (SEO) 2008: | 970106 Expanding Knowledge in the Biological Sciences 970104 Expanding Knowledge in the Earth Sciences |
Socio-Economic Objective (SEO) 2020: | 280102 Expanding knowledge in the biological sciences 280107 Expanding knowledge in the earth sciences |
Peer Reviewed: | Yes | HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
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Appears in Collections: | Journal Article |
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