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New Bradoriids from the Lower Cambrian Mernmerna Formation, South Australia: Systematics, Biostratigraphy And Biogeography
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
2007 (English)In: Memoirs of the Association of Australasian Palaeontologists, ISSN 0810-8889, Vol. 33, 67-100 p.Article in journal (Refereed) Published
Abstract [en]

An assemblage of bradoriid arthropods from the Mernmerna Formation in the Donkey Bore

Syncline, central Flinders Ranges, South Australia contains eleven species, including three species

of the enigmatic ornamented spine Mongolitubulus. Four new taxa are described, Onagrocharion

tuberosus gen. et sp. nov., Amphikeropsis myklosis gen. et sp. nov., Hipponicharion australis sp.

nov. and Mongolitubulus unispinosa sp. nov. The presence of Hipponicharion australis sp. nov.

in the upper Mernmerna Formation represents the first occurence of the genus in Australia and

extends the biogeographic range of Hipponicharion to eastern Gondwana. Bradoriid specimens

of Mongolitubulus unispinosa sp. nov. exhibiting a single mature ornamented spine attached

to the central portion of the carapace provides definitive evidence of a bradoriid affinity for the

enigmatic, widespread Mongolitubulus small shelly fossil taxon. The assemblage includes several

species that facilitate correlation with the Stansbury Basin of South Australia, but also with faunas

from other Cambrian palaeocontinents, including Antarctica and Laurentia.

Place, publisher, year, edition, pages
2007. Vol. 33, 67-100 p.
Keyword [en]
Early Cambrian, South Australia, Bradoriida, new taxa, Onagrocharion
National Category
Earth and Related Environmental Sciences
URN: urn:nbn:se:uu:diva-12670OAI: oai:DiVA.org:uu-12670DiVA: diva2:40439
Available from: 2008-01-09 Created: 2008-01-09 Last updated: 2010-05-10Bibliographically approved

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