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Theropod teeth from the basalmost Cretaceous of Anoual (Morocco) and their palaeobiogeographical significance

Published online by Cambridge University Press:  16 February 2009

F. KNOLL  and
J. I. RUIZ-OMEÑACA
F. KNOLL*
Affiliation:
Departamento de Paleobiología, Museo Nacional de Ciencias Naturales-CSIC, C/José Gutiérrez Abascal 2, E-28006 Madrid, Spain
J. I. RUIZ-OMEÑACA
Affiliation:
Museo del Jurásico de Asturias, Rasa de San Telmo, E-33328 Colunga, Spain
*
†Author for correspondence: mcnfk854@mncn.csic.es
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Abstract

The theropod teeth from the Berriasian (Early Cretaceous) site of Anoual (N Morocco) are described. The assemblage is important in that it comes from one of the very few dinosaur sites of this age globally and the only one for the whole of Gondwana. The theropod teeth from Anoual are morphologically diverse. Most of the material possibly belongs to the clade Dromaeosauridae, which would be an early occurrence for this taxon. The palaeogeographic position of Anoual enables it to provide data on the dispersal events that affected terrestrial faunas during Mesozoic times. A Laurasian influence is evidenced by the presence of Velociraptorinae and, on the whole, the theropod fauna from Anoual provides support for the existence of a trans-Tethyan passage allowing terrestrial faunal interchanges during Late Jurassic and/or earliest Cretaceous times. Additionally, Anoual records the existence of diminutive theropods. However, it cannot yet be determined whether the small size of the specimens is genetic or ontogenetic.

Keywords

dinosaurCretaceouspalaeogeographyAfricaEurope
Type
Original Article
Information
Geological Magazine , Volume 146 , Issue 4 , July 2009 , pp. 602 - 616
Copyright
Copyright © Cambridge University Press 2009

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