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Type: Journal article
Title: A review of Australasian ichthyosaurs
Author: Zammit, Maria
Citation: Alcheringa: an Australasian journal of palaeontology, 2010; 34(3):281-292
Publisher: Taylor & Francis
Issue Date: 2010
ISSN: 0311-5518
School/Discipline: School of Earth and Environmental Sciences
Abstract: Ichthyosaur fossils have been recorded from four landmasses in the Australasian region—Australia, New Zealand, New Caledonia and Timor—and occur in all three systems of the Mesozoic. Most of the remains are non-diagnostic, but at least three genera have been identified: Mixosaurus, from the Middle Triassic of Timor; Shonisaurus, from the Upper Triassic of New Caledonia; and Platypterygius, from the Lower Cretaceous of Australia and New Zealand. Of these, Platypterygius contains the only material that can be diagnosed to species level. However, current taxonomy of the specimens is controversial, with two synonyms, P. australis and P. longmani, persisting in the literature. An examination of cranial traits in the 'quasi-holotype' of P. australis vs P. longmani demonstrates that they represent the same taxon. Thus, P. longmani should be regarded as the junior synonym. A neotype is also here designated for P. australis to replace the original, which is presumed lost.
Keywords: Ichthyosauria; New Zealand; New Caledonia; Timor; Australia; high-latitude; Mesozoic
Rights: © 2011 Informa plc. Copyright © 2010 Association of Australasian Palaeontologists
RMID: 0020102805
DOI: 10.1080/03115511003663939
Appears in Collections:Earth and Environmental Sciences publications

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