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https://hdl.handle.net/1959.11/30293
Title: | Shelly fauna from the Cambrian (Miaolingian, Guzhangian) Shannon Formation and the SPICE event in the Amadeus Basin, Northern Territory | Contributor(s): | Smith, Patrick M (author); Brock, Glenn A (author); Paterson, John R (author)![]() |
Publication Date: | 2019-10-01 | DOI: | 10.1080/03115518.2019.1660405 | Handle Link: | https://hdl.handle.net/1959.11/30293 | Abstract: | A low-diversity assemblage of linguliformean brachiopods, hyoliths, molluscs, bradoriid arthropods and echinoderms (ten taxa in total) is documented from the upper Shannon Formation (Cambrian, Miaolingian, Guzhangian; Mindyallan) in the Ross River Syncline and Todd River Anticline area, NE Amadeus Basin, central Australia. Taxa described include: the linguliformean brachiopods Treptotreta jucunda Henderson & MacKinnon, 1981, Opisthotreta sp., Stittia? sp., an undetermined acrotretid and an undetermined linguloid; the molluscs Kobayashiella? heritagensis Webers, Pojeta & Yochelson, 1992 (a paragastropod), and Apoptopegma joyceae sp. nov. (a rostroconch); the bradoriid Mongolitubulus sp.; Hyolithida gen. et sp. indet.; and isolated echinoderm plates. All fauna (including previously documented trilobites) from the upper Shannon Formation disappear at the beginning of a ∼5‰ positive shift in δ13C, identified as the Steptoean Positive Isotopic Carbon Excursion (SPICE). Despite previous links between SPICE and a global extinction, as well as the disappearance of all faunal elements in the uppermost Shannon Formation, certain taxa reported herein range through the event elsewhere in the world. The occurrence of Treptotreta jucunda and Kobayashiella? in younger (Furongian) deposits indicates these species survived the SPICE extinction event. This study advocates for more systematic and comprehensive sampling through stratigraphic intervals where the SPICE event occurs, especially for range data of complete faunas (rather than individual taxonomic groups), to facilitate a more complete picture of diversity trends through this important phase. | Publication Type: | Journal Article | Grant Details: | ARC/DP120104251 | Source of Publication: | Alcheringa: An Australasian Journal of Palaeontology, 44(1), p. 1-24 | Publisher: | Taylor & Francis | Place of Publication: | United Kingdom | ISSN: | 1752-0754 0311-5518 |
Fields of Research (FoR) 2008: | 040308 Palaeontology (incl. Palynology) 060301 Animal Systematics and Taxonomy 040311 Stratigraphy (incl. Biostratigraphy and Sequence Stratigraphy) |
Fields of Research (FoR) 2020: | 370506 Palaeontology (incl. palynology) 310401 Animal systematics and taxonomy |
Socio-Economic Objective (SEO) 2008: | 970104 Expanding Knowledge in the Earth Sciences 970106 Expanding Knowledge in the Biological Sciences |
Socio-Economic Objective (SEO) 2020: | 280107 Expanding knowledge in the earth sciences 280102 Expanding knowledge in the biological sciences |
Peer Reviewed: | Yes | HERDC Category Description: | C1 Refereed Article in a Scholarly Journal |
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Appears in Collections: | Journal Article School of Environmental and Rural Science |
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