Conodonts and tabulate corals from the Upper Ordovician Angullong Formation of central New South Wales, Australia

doi:10.1080/03115518.2016.1185869

	Conodonts and tabulate corals from the Upper Ordovician Angullong Formation of central New South Wales, Australia
	Zhen Y. Y; Wang Guangxu (王光旭); Percival, I. G.
	2017
发表期刊	Alcheringa
ISSN	0311-5518
卷号	41 期号:2 页码:141-168
摘要	The Angullong Formation is the youngest Ordovician unit exposed in the Cliefden Caves area of central New South Wales. Its maximum age is constrained by a Styracograptus uncinatus graptolite Biozone fauna at the very top of the underlying Malongulli Formation, but the few fossils previously reported from higher in the Angullong Formation are either long-ranging or poorly known. From allochthonous limestone clasts in the middle part of the formation, we document a conodont fauna comprising Aphelognathus grandis, A. solidum, Aphelognathus sp., Aphelognathus? sp., Belodina confluens, Drepanoistodus suberectus, Panderodus gracilis, Panderodus sp., Phragmodus undatus, Pseudobelodina inclinata and Pseudobelodina? sp. aff. P. obtusa, which supports correlation with the Aphelognathus grandis Biozone (late Katian) of the North American Midcontinent succession. The species concepts of Aphelognathus and Pseudobelodina are reviewed in detail. Associated corals are exclusively tabulates, dominated by agetolitids, including Agetolites angullongensis sp. nov., Heliolites orientalis, Hemiagetolites breviseptatus, Hemiagetolites sp. cf. H. spinimarginatus, Navoites sp. cf. N. circumflexa, Plasmoporella bacilliforma, P. marginata, Quepora sp. cf. Q. calamus and Sarcinula sp. Affinities of the coral fauna from the Angullong Formation are closer to faunas from northern NSW and northern Queensland than to the locally recognized Fauna III of late Eastonian age in central NSW. We propose a subdivision of Fauna III to account for this difference, with the late Katian Fauna IIIB characterized by the incoming of agetolitid corals. The currently known distribution of representatives of this group with adequate age constraints suggests that agetolitids possibly originated in North China, subsequently migrating to Tarim, South China and adjacent peri-Gondwanan terranes while also spreading eastward to northern Gondwana, where they progressively moved through eastern Australia to reach the central NSW region by the early Bolindian.
关键词	Conodonts tabulate corals Ordovician Katian biostratigraphy palaeobiogeography New South Wales
DOI	10.1080/03115518.2016.1185869
收录类别	SCI
语种	英语
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:000399465900001
出版者	TAYLOR & FRANCIS LTD
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/13086
专题	中国科学院南京地质古生物研究所其他
通讯作者	Zhen Y. Y
推荐引用方式 GB/T 7714	Zhen Y. Y,Wang Guangxu ,Percival, I. G.. Conodonts and tabulate corals from the Upper Ordovician Angullong Formation of central New South Wales, Australia[J]. Alcheringa,2017,41(2):141-168.
APA	Zhen Y. Y,Wang Guangxu ,&Percival, I. G..(2017).Conodonts and tabulate corals from the Upper Ordovician Angullong Formation of central New South Wales, Australia.Alcheringa,41(2),141-168.
MLA	Zhen Y. Y,et al."Conodonts and tabulate corals from the Upper Ordovician Angullong Formation of central New South Wales, Australia".Alcheringa 41.2(2017):141-168.