Ordovician faunas of Burgess Shale type

Peter Van Roy*, Patrick J. Orr, Joseph P. Botting, Lucy A. Muir, Jakob Vinther, Bertrand Lefebvre, Khadija el Hariri, Derek E. G. Briggs

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

209 Citations (Scopus)

Abstract

The renowned soft-bodied faunas of the Cambrian period, which include the Burgess Shale, disappear from the fossil record in the late Middle Cambrian, after which the Palaeozoic fauna(1) dominates. The disappearance of faunas of Burgess Shale type curtails the stratigraphic record of a number of iconic Cambrian taxa. One possible explanation for this loss is a major extinction(2,3), but more probably it reflects the absence of preservation of similar soft-bodied faunas in later periods(4). Here we report the discovery of numerous diverse soft-bodied assemblages in the Lower and Upper Fezouata Formations (Lower Ordovician) of Morocco, which include a range of remarkable stem-group morphologies normally considered characteristic of the Cambrian. It is clear that biotas of Burgess Shale type persisted after the Cambrian and are preserved where suitable facies occur. The Fezouata biota provides a link between the Burgess Shale communities and the early stages of the Great Ordovician Biodiversification Event.

Original languageEnglish
Pages (from-to)215-218
Number of pages4
JournalNature
Volume465
Issue number7295
DOIs
Publication statusPublished - 13 May 2010

Keywords

  • CAMBRIAN EXPLOSION
  • CANADA
  • PRESERVATION
  • BIOTAS
  • BASIN
  • DIVERSITY
  • LAGERSTATTE
  • DEVONIAN HUNSRUCK SLATE
  • GERMANY

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