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Associated conchs and opercula of Triplicatella disdoma (Hyolitha) from the early Cambrian of South Australia
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
2014 (English)In: Alcheringa, ISSN 0311-5518, E-ISSN 1752-0754, Vol. 38, no 1, 148-153 p.Article in journal (Refereed) Published
Abstract [en]

Internal moulds of complete shells, including conch and associated opercula, of the hyolith Triplicatella disdoma from Cambrian Series 2, Stages 3-4 of South Australia are described. The conch of T. disdoma is shown to be narrow and cone-shaped, and with a rounded triangular cross-section. The conch shows a gentle dorsal curvature in lateral view. The fossils lack evidence of helens, and the operculum was smaller than the apertural diameter of the conch and could be withdrawn a short distance into the conch. Triplicatella was probably closely related to orthothecid hyoliths.

Place, publisher, year, edition, pages
2014. Vol. 38, no 1, 148-153 p.
Keyword [en]
Hyolitha, Orthothecida, shell articulation, early Cambrian
National Category
Archaeology
Identifiers
URN: urn:nbn:se:uu:diva-227950DOI: 10.1080/03115518.2014.843381ISI: 000336002600008OAI: oai:DiVA.org:uu-227950DiVA: diva2:732993
Available from: 2014-07-07 Created: 2014-07-02 Last updated: 2017-12-05Bibliographically approved

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Topper, Timothy P.

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