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First record of an Early Cretaceous shark (Chondrichthyes, Neoselachii) from Antarctica

Published online by Cambridge University Press:  02 December 2003

JÜRGEN KRIWET
JÜRGEN KRIWET
Affiliation:
Department of Earth Sciences, University of Bristol, Wills Memorial Building, Queen's Road, Bristol BS8 1RJ, UK, juergen.kriwet@bristol.ac.uk
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Abstract

A shark tooth from the Spartan Glacier Formation of the Fossil Bluff Group of Alexander Island, Antarctic Peninsula is described and assigned to Palaeospinacidae, an extinct group of neoselachian sharks. This tooth was previously supposed to have been recovered from Middle Jurassic strata and to belong to Hybodus. However, sedimentation of the Spartan Glacier Formation was from the Valangian to Aptian. Consequently, an Early Cretaceous age is assigned to the specimen although its exact stratigraphical horizon is unknown. A generic assignment, however, is not possible although it may belong to Paraorthacodus. This specimen represents the first record of a neoselachian from the Early Cretaceous of Antarctica.

Keywords

Alexander IslandFossil Bluff GroupSynechodontiformes
Type
Research Article
Information
Antarctic Science , Volume 15 , Issue 4 , December 2003 , pp. 507 - 511
Copyright
© Antarctic Science Ltd 2003

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