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Description of new cranial material of Propalorchestes (Marsupialia: Palorchestidae) from the middle Miocene camfield beds, Northern Territory, Australia

Trusler, PW; Sharp, AC; (2016) Description of new cranial material of Propalorchestes (Marsupialia: Palorchestidae) from the middle Miocene camfield beds, Northern Territory, Australia. Memoirs of Museum Victoria , 74 pp. 291-324. 10.24199/j.mmv.2016.74.21. Green open access

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Abstract

Additional material referable to Propalorchestes novaculacephalus from the middle Miocene Camfield Beds is described. A cranium prepared in 1999-2000 from material collected on the T. H. Rich expedition of 1981 represents the most complete skull of the genus found to date. The detailed preservation of the previously unknown rostral anatomy supports the hypothesis that Propalorchestes possessed retracted nasal morphology. Cheek teeth from the skull and an additional isolated mandibular fragment from the same site, adds to the dental record for the genus. It further supports the intermediate condition of the molar morphology between the fully bilophodont Palorchestes and the subselenodont/semilophodont wynyardiid morphologies. The highly retracted nasal morphology and corresponding mandibular features demonstrate an advanced and highly derived condition in contrast to the plesiomorphic features previously described for the basicranium. In comparison to the generalized rostral anatomy of the sister group, the early to middle Miocene Diprotodontidae, this more complete record of Propalorchestes cranial morpholgy, suggests a significantly earlier origin for the highly derived facial anatomy in the Palorchestidae.

Type: Article
Title: Description of new cranial material of Propalorchestes (Marsupialia: Palorchestidae) from the middle Miocene camfield beds, Northern Territory, Australia
Open access status: An open access version is available from UCL Discovery
DOI: 10.24199/j.mmv.2016.74.21
Publisher version: http://doi.org/10.24199/j.mmv.2016.74.21
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. This is an open access journal, which means that all content is freely available without charge to the user or his/her institution. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, without asking prior permission from the publisher or the author. This is in accordance with the BOAI definition of open access.
Keywords: Propalorchestes, Palorchestidae, Vombatomorphia, Vombatiformes, Marsupialia, Miocene, Camfield Beds, Bullock Creek Local Fauna
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/10044254
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