Global Cambrian trilobite palaeobiogeography assessed using parsimony analysis of endemicity

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Abstract

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.

Detaljer

Författare
  • J. Javier Álvaro
  • 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
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Geologi
Originalspråkengelska
Titel på värdpublikationEarly Palaeozoic Biogeography and Palaeogeography
RedaktörerDavid A.T. Harper, Thomas Servais
FörlagGeological Society of London
Sidor273-296
VolymMemoir 38
ISBN (tryckt)978-1-86239-373-8
StatusPublished - 2013
PublikationskategoriForskning
Peer review utfördJa

Publikationsserier

Namn
Nummer38
VolymMemoir 38
ISSN (tryckt)0435-4052