Abstract

The head of Canowindra grossi is redescribed from newly prepared casts of the holotype. The cheek has a fractionated postorbital series consisting of one large and two small postorbital bones; the lachrymal is small relative to the postorbitals and jugal, and the jugal is elongate. The opercular is deep, and higher than long. The skull table features a parietal shield without differentiated intertemporal, supratemporal or parietal bones. Canowindra shares with osteolepids plus eusthenopterids (Osteolepiformes) a large, externally ornamented anocleithrum, and a cheek with bar-like, vertical preopercular and single, large squamosal bone. It differs from these groups in the structure of the postorbital series and skull roof table. Canowindra represents an endemic genus which should be regarded as the only member of a taxon equivalent to osteolepids plus eusthenopterids. An amended diagnosis of the genus is given.

 
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Bibliographic Data

Short Form
Long, 1985, Rec. Aust. Mus. 37(2): 91–99
Author
John A. Long
Year
1985
Title
New information on the head and shoulder girdle of Canowindra grossi Thomson, from the Late Devonian Mandagery Sandstone, New South Wales
Serial Title
Records of the Australian Museum
Volume
37
Issue
2
Start Page
91
End Page
99
DOI
10.3853/j.0067-1975.37.1985.338
Language
English
Date Published
01 August 1985
Cover Date
01 August 1985
ISSN
0067-1975
CODEN
RAUMAJ
Publisher
The Australian Museum
Place Published
Sydney, Australia
Subjects
DEVONIAN; FOSSIL
Digitized
09 January 2009
Available Online
03 March 2009
Reference Number
338
EndNote
/Uploads/Journals/17645/338.enw
Title Page
/Uploads/Journals/17645/338.pdf
File size: 153kB
Complete Work
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