Australian Museum Journal Fossil avian assemblage of pitfall origin from Holocene sediments in Amphitheatre Cave (G-2), south-western Victoria, Australia

Shortform:
Baird, 1992, Rec. Aust. Mus. 44(1): 21–44
Author(s):
Baird, Robert F.
Year published:
1992
Title:
Fossil avian assemblage of pitfall origin from Holocene sediments in Amphitheatre Cave (G-2), south-western Victoria, Australia
Serial title:
Records of the Australian Museum
Volume:
44
Issue:
1
Start page:
21
End page:
44
DOI:
10.3853/j.0067-1975.44.1992.27
Language:
English
Date published:
28 May 1992
Cover date:
28 May 1992
ISSN:
0067-1975
CODEN:
RAUMAJ
Publisher:
The Australian Museum
Place published:
Sydney, Australia
Subjects:
AVES; PALAEONTOLOGY
Digitized:
25 February 2009
Available online:
09 March 2009
Reference number:
27
EndNote package:
EndNote file
Title page:
Title page (90kb PDF)
Complete work:
Complete work (3167kb PDF)

Abstract

The fossil avian assemblage from Amphitheatre Cave (6 km north of the township of Nelson, Victoria, Australia) consists of 27 species of birds. Three dominate the assemblage with 63% of the total minimum number of individuals (i.e., Gallinula mortierii, Dasyornis broadbenti and Dasyornis brachypterus). Most of the material originated from a pitfall accumulation, based upon the large percentage of individuals belonging to terrestrial species with elements lacking the damage characteristic of vertebrate accumulators. Geographic range extensions are noted for three species (i.e., Gallinula mortierii, D. brachypterus and Ptilonorhynchus violaceus). Assuming the assemblage is intra-contemporaneous, the reconstruction of vegetation at the time of deposition would include; wetlands with some areas of short cropped grass, bordered by wet heathland, which subsequently gave way to Eucalyptus open forest formation away from the water source and Eucalyptus tall open forest formation in the gullies. The age of the deposit (4,670 +/- 90 y.B.P.: NZA 700) is based upon a single radiocarbon date on bone.