Abstract

In this paper two new genera of lamellibranchia are recognized from the Upper Permian beds of Western Australia. Four species are described from the Wandagee Series, while two are also recorded from the Nooncanbah Series, its northern equivalent in. the West Kimberley Division. The shells are of particular interest as they possess a wide V or chevron-shaped type of ornamentation which is rarely found on palaeozoic shells. They are edentulous, posteriorly-gaping forms, possessing close affinities with mesozoic shells of the Family Pholadomyidae. The two new genera bear a close resemblance to Permian shells recently described from Madagascar by Astre (1934) and also have many points in common with Jurassic shells from the Spiti Shales described by Holdhaus (1913) as Goniomya Agassiz and Cosmomya, gen. nov.

 
Download Complete Work

Bibliographic Data

Short Form
Fletcher, 1946, Rec. Aust. Mus. 21(7): 395–405
Author
Harold O. Fletcher
Year
1946
Title
New Lamellibranchia from the Upper Permian of Western Australia
Serial Title
Records of the Australian Museum
Volume
21
Issue
7
Start Page
395
End Page
405
DOI
10.3853/j.0067-1975.21.1946.557
Language
English
Plates
plates xxxiv–xxxv
Date Published
24 June 1946
Cover Date
24 June 1946
ISSN
0067-1975
CODEN
RAUMAJ
Publisher
The Australian Museum
Place Published
Sydney, Australia
Subjects
MOLLUSCA: BIVALVIA; PALAEONTOLOGY; PERMIAN: LATE
Digitized
03 September 2009
Reference Number
557
EndNote
/Uploads/Journals/17330/557.enw
Title Page
/Uploads/Journals/17330/557.pdf
File size: 134kB
Complete Work
/Uploads/Journals/17330/557_complete.pdf
File size: 2665kB