Australian Museum Journal Equisetalean plant remains from the Early to Middle Triassic of New South Wales, Australia

Shortform:
Holmes, 2001, Rec. Aust. Mus. 53(1): 9–20
Author(s):
Holmes, W. B. K.
Year published:
2001
Title:
Equisetalean plant remains from the Early to Middle Triassic of New South Wales, Australia
Serial title:
Records of the Australian Museum
Volume:
53
Issue:
1
Start page:
9
End page:
20
DOI:
10.3853/j.0067-1975.53.2001.1320
Language:
English
Date published:
09 May 2001
Cover date:
09 May 2001
ISSN:
0067-1975
CODEN:
RAUMAJ
Publisher:
The Australian Museum
Place published:
Sydney, Australia
Digitized:
09 May 2001
Available online:
09 May 2001
Reference number:
1320
EndNote package:
EndNote file
Title page:
Title page (8kb PDF)
Complete work:
Complete work (1176kb PDF)

Abstract

Equisetalean fossil plant remains of Early to Middle Triassic age from New South Wales are described. Robust and persistent nodal diaphragms composed of three zones; a broad central pith disc, a vascular cylinder and a cortical region surrounded by a sheath of conjoined leaf bases, are placed in Nododendron benolongensis n.sp. The new genus Townroviamites is erected for stems previously assigned to Phyllotheca brookvalensis which bear whorls of leaves forming a narrow basal sheath and the number of leaves matches the number of vascular bundles. Finely striated stems bearing leaf whorls consisting of several foliar lobes each formed from four to seven linear conjoined leaves are described as Paraschizoneura jonesii n.sp. Doubts are raised about the presence of the common Permian Gondwanan sphenophyte species Phyllotheca australis and the Northern Hemisphere genus Neocalamites in Middle Triassic floras of Gondwana.