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Per Ahlberg

Per Ahlberg

Professor emeritus

Per Ahlberg

Complete record of Furongian polymerid trilobites and agnostoids of Scandinavia : a biostratigraphical scheme

Author

  • Fredrik Terfelt
  • Per Ahlberg
  • Mats Eriksson

Summary, in English

So far, 112 polymerid trilobite species/subspecies and 13 agnostoid species/subspecies have been recorded from the Furongian (upper Cambrian) of Scandinavia. For the first time, their zonal occurrences are summarized in a biostratigraphical scheme serving as a practical synopsis for students of this interval in time. Ninety-six of the recorded polymerid trilobite species/subspecies belong to the family Olenidae whereas the remaining 16 are distributed across eight other families. Levels of increased speciation and low diversity (including stratigraphical range gaps) are conspicuous and these may be correlated with recorded physical and chemical anomalies.

Department/s

  • Lithosphere and Biosphere Science

Publishing year

2011

Language

English

Pages

8-14

Publication/Series

Lethaia

Volume

44

Issue

1

Document type

Journal article

Publisher

Taylor & Francis

Topic

  • Geology

Keywords

  • Agnostoids
  • biostratigraphy
  • Cambrian
  • Furongian
  • polymerids
  • Scandinavia
  • trilobites

Status

Published

ISBN/ISSN/Other

  • ISSN: 0024-1164