A primitive amphibian from the Late Devonian of New South Wales

被引：76

作者：

Campbell, K. S. W. ^{[1
]}

Bell, M. W. ^{[2
]}

机构：

[1] Australian Natl Univ, Dept Geol, GPO Box 4, Canberra, ACT 2600, Australia

[2] Australian Groundwater Consultants, Melbourne, Vic 3000, Australia

来源：

ALCHERINGA | 1977年 / 1卷 / 04期

关键词：

D O I：

10.1080/03115517708527771

中图分类号：

Q91 [古生物学];

学科分类号：

0709 ; 070903 ;

摘要：

A locality in the Late Devonian Cloghnan Shale (Nangar Subgroup) near Forbes, N.S.W., has yielded a rich vertebrate fauna including the antiarchs Bothriolepis and Remigolepis, the phyllolepid Phyllolepis, the dipnoan Soederberghia, and the jaw of a new ichthyostegaliid amphibian Metaxygnathus denticulus gen. et sp. nov. The amphibian is the oldest known member of the group with the possible exception of Elpistostege Westoll, and it retains characters previously associated with the rhipidistian fishes. The musculatures of rhipidistian and amphibian jaws are analysed and are shown to be functionally related to distinctive morphologies of the articulatory region in each group, Metaxygnathus being of amphibian type. Comparison is made with the Greenland ichthyostegids, and rhipidistians such as Eusthenodon.

引用

页码：369 / 381

页数：13

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