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A new early Cambrian bradoriid (Arthropoda) assemblage from the northern Flinders Ranges, South Australia
Macquarie University, Sydney, Australia.
Geological Museum, Copenhagen.
Macquarie University, Sydney, Australia.
Swedish Museum of Natural History, Department of Paleobiology.ORCID iD: 0000-0001-7366-7680
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2014 (English)In: Gondwana Research, ISSN 1342-937X, E-ISSN 1878-0571, Vol. 25, 420-437 p.Article in journal (Refereed) Published
Abstract [en]

A new assemblage of early Cambrian bivalved arthropods (Bradoriida) is described from the Arrowie Syncline in the northern Flinders Ranges, South Australia. The well preserved, largely endemic fauna comprises a total of six taxa (including five new species): Jiucunella phaseloa sp. nov., Jixinlingella daimonikoa sp. nov., Mongolitubulus anthelios sp. nov., Neokunmingella moroensis sp. nov., Phasoia cf. spicata ( Öpik, 1968), and Sinskolutella cuspidata sp. nov. This assemblage is derived from a carbonate sedimentary package representing a high energy, shallow water archaeocyath-Renalcis biohermal facies of Terreneuvian, Stage 2 age which transitions up-section to a more restricted, low energy, intra-shelf lagoonal environment that correlates with a Cambrian Series 2, Stage 3 age. The new taxon J. phaseloa sp. nov., has a first appearance datum (FAD) in shallow water biohermal facies of the Hideaway Well Member of the Wilkawillina Limestone at a level 47 m below the FAD of Pelagiella subangulata which is taken to approximate the base of Series 2, Stage 3 in South Australia. Along with Liangshanella circumbolina, this makes J. phaseloa sp. nov. amongst the oldest bivalved arthropods in South Australia and potentially greater Gondwana. The presence of 25 bradoriid taxa from the early Cambrian of South Australia suggests East Gondwana represents a major centre of origin for the Bradoriida.

Place, publisher, year, edition, pages
2014. Vol. 25, 420-437 p.
Keyword [en]
Early Cambrian, Bradoriida, Abadiella huoi biozone, Bivalved arthropod, Pelagiella subangulata
National Category
Geology
Research subject
Ecosystems and species history
Identifiers
URN: urn:nbn:se:nrm:diva-869DOI: 10.1016/j.gr.2013.05.007OAI: oai:DiVA.org:nrm-869DiVA: diva2:765703
Projects
Origin and early evolution of major animal clades in the Cambrian Period
Available from: 2014-11-24 Created: 2014-11-20 Last updated: 2017-12-05Bibliographically approved

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Publisher's full texthttp://www.sciencedirect.com/science/article/pii/S1342937X13001664

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