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The Beothuka terranova (Radiolaria) assemblage and its importance for the understanding of early Ordovician radiolarian evolution

Published online by Cambridge University Press:  15 November 2005

JORG MALETZ  and
DAVID L. BRUTON
JORG MALETZ
Affiliation:
Geology, University at Buffalo, SUNY, Buffalo, NY 14260, USA
DAVID L. BRUTON
Affiliation:
Geological Museum, University of Oslo, Boks 1172 Blindern, N-0318 Oslo, Norway
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Abstract

The radiolarian Beothuka terranova occurs in the Arenigian Didymograptellus bifidus Biozone (uppermost Lower Ordovician) of Spitsbergen (Svalbard), associated with a diverse and well-preserved radiolarian fauna. The presence of typical Cambrian spicular radiolarians associated with derived spherical forms shows a gradational faunal change from the Cambrian to the Ordovician. The genus and species Antygopora ordovicica n. gen. et n. sp. is described.

Keywords

OrdovicianradiolariansSpitsbergenbiostratigraphyevolution
Type
Original Article
Information
Geological Magazine , Volume 142 , Issue 6 , November 2005 , pp. 711 - 721
Copyright
© 2005 Cambridge University Press

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