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Per Ahlberg, Skottland 2013

Per Ahlberg

Professor emeritus

Per Ahlberg, Skottland 2013

Sphenothallus from the Furongian (Cambrian) of Scandinavia

Författare

  • 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.

Avdelning/ar

  • Berggrundsgeologi

Publiceringsår

2015

Språk

Engelska

Sidor

20-24

Publikation/Tidskrift/Serie

GFF

Volym

137

Issue

1

Dokumenttyp

Artikel i tidskrift

Förlag

Taylor & Francis

Ämne

  • Geology

Nyckelord

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

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 2000-0863