Australian Museum Journal Graptolite zonation in the Late Wenlock (Early Silurian), with a new graptolite-brachiopod fauna from New South Wales

Shortform:
Rickards and Wright, 1997, Rec. Aust. Mus. 49(3): 229–248
Author(s):
Rickards, R. B.; Wright, A. J.
Year published:
1997
Title:
Graptolite zonation in the Late Wenlock (Early Silurian), with a new graptolite-brachiopod fauna from New South Wales
Serial title:
Records of the Australian Museum
Volume:
49
Issue:
3
Start page:
229
End page:
248
DOI:
10.3853/j.0067-1975.49.1997.1269
Language:
English
Date published:
22 December 1997
Cover date:
22 December 1997
ISSN:
0067-1975
CODEN:
RAUMAJ
Publisher:
The Australian Museum
Place published:
Sydney, Australia
Digitized:
17 February 2009
Available online:
05 March 2009
Reference number:
1269
EndNote package:
EndNote file
Title page:
Title page (95kb PDF)
Complete work:
Complete work (5276kb PDF)

Abstract

The Panuara Formation at Cobblers Creek near Orange, New South Wales, Australia has yielded a graptolite-brachiopod fauna assigned to the sherrardae sub-Biozone (late Wenlock: Early Silurian). The sherrardae sub-Biozone as defined here is equivalent to the praedeubeli sub-Biozone, and is the lowest part of the ludensis Biozone. The ludensis Biozone is reappraised following restudy of the type specimens of Monograptus ludensis, which are shown to exhibit growth stages from the deubeli to the gerhardi condition. The graptolite fauna consists of Gothograptus chainos Lenz, G. marsupium Lenz, Pristiograptus jaegeri Holland, Rickards & Warren, Pristiograptus dubius (Suess), Monograptus ludensis (Murchison), Monograptus moorsi n.sp., Monograptus sp. and Lobograptus sherrardae (Sherwin). The limited shelly fauna includes the brachiopods Plectodonta brownae n.sp., Bracteoleptaena pannucea n.sp. and ?Lissatrypa.

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