Stewart, Sarah E, Clarkson, Euan Neilson Kerr, Ahlgren, John, Ahlgren, Per and Schoenemann, Brigitte (2015) Sphenothallus from the Furongian (Cambrian) of Scandanavia. GFF, 137 (1). pp. 20-24. ISSN 1103-5897

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Abstract

Sphenothallus, a Palaeozoic genus of uncertain affinity, possibly a hydrozoan, is reported from the Furongian (Cambrian) of Scandinavia. This is the only known occurrence of the genus in Cambrian rocks outside of China, western North America and Bohemia, and also the first report of Sphenothallus in the Cambrian–Ordovician of Baltica. The material is from the upper Furongian (upper Protopeltura and lower Peltura superzones) of Mount Kinnekulle, Västergötland, south-central Sweden. It consists of elongated, slightly tapering, shiny black phosphatic tubules. Scanning electron microscope photographs confirm paired internal longitudinal thickenings, typical of the genus, on opposite sides of the central lumen. The presence of the Swedish material in a low-energy, dysoxic facies is consistent with most previous occurrences.

Item Type:	Article
Uncontrolled Keywords:	Sphenothallus, Alum Shale Formation, Furongian, Cambrian, Västergötland, Sweden
Subjects:	D History General and Old World > DL Northern Europe. Scandinavia Q Science > QE Geology Q Science > QL Zoology
Theme:	Understanding the natural world
Department:	Natural Sciences
Related URLs:	http://nms.ac.uk/about-us/collections-departments/natural-sciences/pal... (Author)
Depositing User:	Ross Anderson
Date Deposited:	08 Feb 2016 12:19
Last Modified:	08 Feb 2016 12:19
URI:	http://repository.nms.ac.uk/id/eprint/1552

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