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Mummpikia gen. nov and the origin of calcitic-shelled brachiopods
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Palaeobiology.
2008 (English)In: Palaeontology, ISSN 0031-0239, E-ISSN 1475-4983, Vol. 51, no 2, 263-279 p.Article in journal (Refereed) Published
Abstract [en]

Phosphatised limestone-hosted and shale-hosted specimens of the obolellid Mummpikia nuda gen. et comb. nov. and two further unidentified obolellids from the Early Cambrian Mural Formation (jasper National Park, Canadian Rocky Mountains) provide novel insights into the shell microstructure of obolellids and the nature of their pedicle. The shell was penetrated by abundant canals of a sub-pm diameter and the anterior tip of the delthyrium forms a projection into the body cavity that is penetrated by a thin canal. It is argued that both shell microstructure and posterior margin are linguliformean characters and that obolellids hold a position basal in the rhynchonelliform stem-group.

Place, publisher, year, edition, pages
2008. Vol. 51, no 2, 263-279 p.
Keyword [en]
brachiopods, pedicle, shell microstructure, phosphatisation
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-88297DOI: 10.1111/j.1475-4983.2008.00754.xISI: 000254486400001OAI: oai:DiVA.org:uu-88297DiVA: diva2:155668
Available from: 2009-01-28 Created: 2009-01-28 Last updated: 2017-12-14Bibliographically approved

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