Silurian and Devonian clathrodictyids and other stromatoporoids from the Broken River region, north Queensland
作者:
B.D. Webby,
Y.Y. Zhen,
期刊:
Alcheringa: An Australasian Journal of Palaeontology
(Taylor Available online 1997)
卷期:
Volume 21,
issue 1
页码: 1-56
ISSN:0311-5518
年代: 1997
DOI:10.1080/03115519708619183
出版商: Taylor & Francis Group
关键词: stromatoporoids;Lower-Middle Devonian;Middle-Upper Silurian;distribution;taxonomy;biostratigraphy;Broken River region;north Queensland
数据来源: Taylor
摘要:
Stromatoporoids are well represented in the carbonate depositional phases of the Middle-Upper Silurian Jack Formation, the Lower-Middle Devonian Shield Creek Formation and Broken River Group of north Queensland. A total of 4 species of Labechiida, 4 species of Actinostromida, 14 species (4 new) of Clathrodictyida and 5 species (1 new) of Stromatoporellida are described and illustrated. They include the new speciesGerronostroma doseyense, G.? apertum, Schistodictyon jackense, Atelodictyon repandumandHermatostroma malletti. The fauna comprises representatives ofCystostroma, Labechiella, Stylostroma, Actinostroma, Aculatostroma, Ecclimadictyon, Plexodictyon, Anostylostroma?, Nexililamina, Pseudoactinodictyon, Tienodictyon, Simplexodictyon, Stromatopororella, Stictostroma, Trupetostroma?,AmnestostromaandStachyodes. Included are revisions of a number of C.W. Mallett's species first described in the early 1970s. The genusNexililaminaMallett is reinterpreted as a clathrodictyid. The history of the ‘less advanced’ labechiids suggests they came close to extinction in the Early Devonian. However, they survived as a distinctive, relict stock in the Lower Devonian Broken River assemblages (up to 4 genera recorded), and lived in close association with non-labechiid components of the fauna.
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