Australian Museum Journal Devonian syringostromatid stromatoporoids from the Broken River region, North Queensland

Shortform:
Webby and Zhen, 2008, Rec. Aust. Mus. 60(3): 215–236
Author(s):
Webby, Barry D.; Zhen, Yong Yi
Year published:
2008
Title:
Devonian syringostromatid stromatoporoids from the Broken River region, North Queensland
Serial title:
Records of the Australian Museum
Volume:
60
Issue:
3
Start page:
215
End page:
236
DOI:
10.3853/j.0067-1975.60.2008.1497
Language:
English
Date published:
01 October 2008
Cover date:
01 October 2008
ISSN:
0067-1975
CODEN:
RAUMAJ
Publisher:
The Australian Museum
Place published:
Sydney, Australia
Subjects:
DEVONIAN; PALAEONTOLOGY; FOSSIL; TAXONOMY
Digitized:
01 October 2008
Available online:
10 October 2008
Reference number:
1497
EndNote package:
EndNote file
Title page:
Title page (114kb PDF)
Complete work:
Complete work (2588kb PDF)

Abstract

Six species of syringostromatid stromatoporoids are described from the biostratigraphically well-constrained carbonate successions of the Broken River region, North Queensland; the various occurrences range from earliest Devonian (early Lochkovian) to Mid-Devonian (late Eifelian). Included are three new Lochkovian species, Atopostroma stearni from the uppermost part of the Jack Formation and the Martins Well Limestone Member of the succeeding Shield Creek Formation, A. protentum and Habrostroma alternum also from the Martins Well Limestone Member. Transitional forms between the species of Atopostroma and Habrostroma are recorded from the Martins Well fauna. In addition Atopostroma distans (Ripper, 1937) is found in the Lomandra Limestone (late Emsian), and is present in reworked pebbles of the Dip Creek and the Chinaman Creek limestones of possible late Emsian-Eifelian. Sparse records of Columnostroma sp. in the Mid-Devonian (late Eifelian) Dosey Limestone, and reworked clasts of Parallelopora sp. in the Chinaman Creek Limestone, also occur. Characteristic structural elements of syringostromatid fauna are described including pachysteles, pachystromes and microlaminae, and microreticulate (acosmoreticular and clinoreticular) microstructures in the best preserved specimens. Also aspects of the evolutionary development of the fauna and the nature of the preservation of certain structural elements are discussed.