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Global Cambrian trilobite palaeobiogeography assessed using parsimony analysis of endemicity

  • J. Javier Álvaro
  • Per Ahlberg
  • Loren E. Babcock
  • Osvaldo L. Bordonaro
  • Duck K. Choi
  • Roger A. Cooper
  • Gappar Kh. Ergaliev
  • I. Wesley Gapp
  • Mansoureh Ghobadi Pour
  • Nigel C. Hughes
  • James B. Jago
  • Igor Korovnikov
  • John R. Laurie
  • Bruce S. Lieberman
  • John R. Paterson
  • Tatyana V. Pegel
  • Leonid E. .Popov
  • Adrian W.A. Rushton
  • Sergei S. Sukhov
  • M. Franco Tortello
  • Zhiyi Zhou
  • Anna Zylinska Zylinska
  • David A.T. Harper
  • Thomas Servais
Publishing year: 2013
Language: English
Pages: 273-296
Publication/Series: Early Palaeozoic Biogeography and Palaeogeography
Volume: Memoir 38
Issue: 38
Document type: Book chapter
Publisher: Geological Society of London

Abstract english

Palaeobiogeographical data on Cambrian trilobites obtained during the twentieth century are combined in this paper to evaluate

palaeoceanographic links through c. 30 myr, once these arthropods biomineralized. Worldwide major tectonostratigraphic units are

characterized at series intervals of Cambrian time and datasets of trilobite genera (629 for Cambrian Series 2, 965 for Cambrian Series 3, and 866 for the Furongian Series) are analysed using parsimony analysis of endemicity. Special attention is given to the biogeographical observations made in microcontinents and exotic terranes. The same is done for platform-basinal transects of well-known continental margins. The parsimony analysis of endemicity analysis resulted in distinct palaeogeographical area groupings among the tectonostratigraphic units. With these groupings, several palaeobiogeographical units are distinguished, which do not necessarily fit the previously proposed biogeographical realms and provinces. Their development and spatial distributions are broadly controlled by Cambrian palaeoclimates, palaeogeographical conditions (e.g. carbonate productivity and anoxic conditions) and ocean current circulation.


  • Geology


  • ISSN: 0435-4052
  • ISBN: 978-1-86239-373-8
Per Ahlberg
E-mail: per [dot] ahlberg [at] geol [dot] lu [dot] se


Lithosphere and Biosphere Science

+46 46 222 78 70