The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Per Ahlberg

Per Ahlberg

Professor emeritus

Per Ahlberg

Sphenothallus from the Furongian (Cambrian) of Scandinavia

Author

  • Sarah Elizabeth Stewart
  • Euan Neilson Kerr Clarkson
  • John Ahlgren
  • Per Ahlberg
  • Brigitte Schoenemann

Summary, in English

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, Vastergotland, 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.

Department/s

  • Lithosphere and Biosphere Science

Publishing year

2015

Language

English

Pages

20-24

Publication/Series

GFF

Volume

137

Issue

1

Document type

Journal article

Publisher

Taylor & Francis

Topic

  • Geology

Keywords

  • Sweden
  • Sphenothallus
  • Cambrian
  • Vastergotland
  • Alum Shale Formation
  • Furongian

Status

Published

ISBN/ISSN/Other

  • ISSN: 2000-0863