A giant Ordovician anomalocaridid

Peter Van Roy and Derek E. G. Briggs ()
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Peter Van Roy: Yale University, PO Box 208109, New Haven, Connecticut 06520, USA
Derek E. G. Briggs: Yale University, PO Box 208109, New Haven, Connecticut 06520, USA

Nature, 2011, vol. 473, issue 7348, 510-513

Abstract: Ocean predators The anomalocaridids were the giant, jointed-legged predators of the Cambrian seas. Well known as one of the oddities from the mid-Cambrian Burgess Shales of Canada, anomalocaridids have been found in Cambrian strata worldwide, but it was widely thought that they and their kin did not survive beyond the Cambrian. Peter Van Roy and Derek Briggs now extend the record of these bizarre creatures to the Ordovician, with a report of anomalocaridids from the Ordovician of Morocco. They join an assemblage of relic Cambrian animals recently described from that country. One of the Ordovician anomalocaridids was a metre or so in length, perhaps capable of challenging predators such as nautiloids for dominance of the seas.

Date: 2011
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DOI: 10.1038/nature09920

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