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New and previously undescribed camenellan tommotiids From The Cambrian Series 2, Stages 3-4, East Antarctica: Biostratigraphy, palaeobiogeography, and systematics
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.ORCID iD: 0000-0002-1216-1886
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.ORCID iD: 0000-0003-3629-0049
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(English)Manuscript (preprint) (Other academic)
Abstract [en]

The Cambrian Series 2 rocks of East Antarctica received limited systematic treatment through the 20th Century. Described here are the East Antarctic camanellan tommotiid fauna from the Shackleton Limestone in the Central Transantarctic Mountains and the Schneider Hills limestone in the Argentina Range. This material comes from both newly sampled collections and incompletely described material from older collections which support correlation to the Dailyatia odyssei Zone and Pararaia janae Zone of South Australia, with the newly examined specimens of Dailyatia decobruta from the Shackleton Limestone providing direct correlation to the Mermerna Formation and White Point Conglomerate. These assemblages include 5 species referred to Dailyatia, in addition to an undetermined kennardiid species and fragments of the problematic Shetlandia multiplicata. The results further corroborate the notion that fossiliferous carbonate clasts found on King George Island were sourced from the same carbonate shelf as the Shackleton Limestone, with the taxa D. decobruta and S. mulitiplicata found in both units. The Schneider Hills limestone in the Argentina Range yielded sclerites of Dailyatia icari sp. nov., currently only known from this location.

Keywords [en]
Tommotiida, Dailyatia, Cambrian Series 2, Biostratigraphy, Palaeobiogeography, East Antarctica
National Category
Other Earth and Related Environmental Sciences
Research subject
Earth Science with specialization in Historical Geology and Palaeontology
Identifiers
URN: urn:nbn:se:uu:diva-404373OAI: oai:DiVA.org:uu-404373DiVA, id: diva2:1394280
Note

New taxa described in this preprint manuscript are not considered valid until final publication of reviewd article, according to the rules of the ICZN

Available from: 2020-02-18 Created: 2020-02-18 Last updated: 2020-03-05Bibliographically approved
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Claybourn, ThomasHolmer, Lars E.

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