Abstract

Anomalocalyx cawoodi new genus and new species, from Middle Cambrian (Floran-Undillan) allochthonous limestone clasts of the Murrawong Creek Formation, north eastern New South Wales, is characterised by a deep, tapering, conical ventral valve with a pair of simple teeth, an arched pseudodeltidium, well defined radial costae, crossed at more or less regular intervals by continuous concentric growth lamellae, and a presumed calcium carbonate shell composition, all suggesting an affinity with the Brachiopoda. Anomalocalyx cawoodi also possesses a number of unusual morphological features including an elongate, tapering interior tube extending along the inner posterior margin of the ventral valve, under the pseudodeltidium, that may be interpreted as a spondylium. Though possible cnidarian and molluscan affinities are fully explored, the weight of available evidence suggests the affinities of A. cawoodi are with the Brachiopoda.

 
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Bibliographic Data

Short Form
Brock, 1999, Rec. Aust. Mus. 51(3): 179–186
Author
Glenn A. Brock
Year
1999
Title
An unusual micromorphic brachiopod from the Middle Cambrian of north-eastern New South Wales, Australia
Serial Title
Records of the Australian Museum
Volume
51
Issue
3
Start Page
179
End Page
186
DOI
10.3853/j.0067-1975.51.1999.1305
Language
English
Date Published
20 October 1999
Cover Date
20 October 1999
ISSN
0067-1975
CODEN
RAUMAJ
Publisher
The Australian Museum
Place Published
Sydney, Australia
Subjects
CAMBRIAN: MIDDLE; BRACHIOPODA
Digitized
20 October 1999
Available Online
20 October 1999
Reference Number
1305
EndNote
/Uploads/Journals/17883/1305.enw
Title Page
/Uploads/Journals/17883/1305.pdf
File size: 8kB
Complete Work
/Uploads/Journals/17883/1305_complete.pdf
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