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A morphological and taxonomic appraisal of the oldest anomalocaridid from the Lower Cambrian of Poland

Published online by Cambridge University Press:  02 July 2015

ALLISON C. DALEY  and
DAVID A. LEGG
ALLISON C. DALEY*
Affiliation:
Oxford University Museum of Natural History, Parks Road, Oxford OX1 3PW, UK Department of Zoology, University of Oxford, The Tinbergen Building, South Parks Road, Oxford OX1 3PS, UK
DAVID A. LEGG
Affiliation:
Oxford University Museum of Natural History, Parks Road, Oxford OX1 3PW, UK
*
†Author for correspondence: [email protected]
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Abstract

Material previously referred to as Cassubia infercambriensis was re-examined and found to represent a composite fossil of a Peytoia-like anomalocaridid frontal appendage and an arthropod of uncertain affinities comparable to some bivalved arthropod taxa. The frontal appendage is referred to the genus Peytoia based on the presence of elongated ventral spines bearing a single row of auxiliary spines. As well as representing the oldest example of an anomalocaridid in the fossil record (Series 2, Stage 3), Peytoia infercambriensis is also the only record of this group from the East European Craton, therefore extending both the temporal and geographic range of the anomalocaridid family Hurdiidae.

Keywords

Peytoia nathorstiCassubiaZawiszyn FormationHurdiidaeCambrian ExplosionArthropoda
Type
Rapid Communication
Information
Geological Magazine , Volume 152 , Issue 5 , September 2015 , pp. 949 - 955
Copyright
Copyright © Cambridge University Press 2015 

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