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The age of the Middle Cambrian ‘Paradoxides forchhammeri Grit’ of the Wrekin district, Shropshire, England

Published online by Cambridge University Press:  26 July 2007

A. W. A. Rushton  and
V. Berg-Madsen
A. W. A. Rushton
Affiliation:
Department of Palaeontology, The Natural History Museum, Cromwell Road, London SW7 5BD, U.K.
V. Berg-Madsen
Affiliation:
Department of Geology, National Museum of Wales, Cardiff CF1 3NP, U.K.; present address: Museum of Evolution, Palaeontology Section, Norbyvägen 16, 752 36 Uppsala, Sweden.
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Abstract

The fossiliferous bed in the Upper Comley Sandstone, described by Cobbold & Pocock (in 1934) as the ‘Paradoxides forchhammeri Grit’ and correlated by them with the Andrarum Limestone of the late Middle Cambrian (P. forchhammeri Stage) in Scandinavia, is shown to be a shallow-water development of the older punctuosus Zone (medial Middle Cambrian, P. paradoxissimus Stage). It is here re-named the ‘Rushton Brook Bed’. The trilobite fauna, formerly considered comparable with that of the Andrarum Limestone, is reviewed and found taxonomically distinct, the supposed similarities being attributable to facial and preservational factors.

Keywords

correlationfaciestrilobites
Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 92 , Issue 3 , September 2001 , pp. 335 - 346
Copyright
Royal Society of Edinburgh 2001

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