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A well-preserved early Namurian ammonoid fauna with Cravenoceras leion Bisat 1930 from Backdale Mine, Hassop, Derbyshire, England

D. Korn and J. W. Tilsley
A well-preserved early Namurian ammonoid fauna with Cravenoceras leion Bisat 1930 from Backdale Mine, Hassop, Derbyshire, England
Proceedings of the Yorkshire Geological Society (November 2002) 54, Part 2: 111-119

Abstract

The Cravenoceras leion Marine Band at Backdale Mine has yielded a stratigraphically important ammonoid fauna consisting of the species Cravenoceras leion Bisat 1930, Edmooroceras medusa (Yates 1961) and Girtyoceras sp. C. leion, in particular, is represented by well preserved material, allowing the description of the entire ontogeny. It is demonstrated that the conch geometry of this species undergoes major transformations, and that the suture line is characteristic of the genus Cravenoceras. Based on the ontogenetic development of the suture line, a clear separation can be made from the Rhenish species Emstites schaelkensis (Bruning 1923).


ISSN: 0044-0604
EISSN: 2041-4811
Coden: PYGSAB
Serial Title: Proceedings of the Yorkshire Geological Society
Serial Volume: 54, Part 2
Title: A well-preserved early Namurian ammonoid fauna with Cravenoceras leion Bisat 1930 from Backdale Mine, Hassop, Derbyshire, England
Affiliation: Humboldt-Universitaet, Museum fuer Naturkunde, Berlin, Federal Republic of Germany
Pages: 111-119
Published: 200211
Text Language: English
Publisher: Yorkshire Geological Society, Leeds, United Kingdom
References: 28
Accession Number: 2004-053686
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sect., 2 tables, sketch map
N52°45'00" - N53°30'00", W02°00'00" - W01°15'00"
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 200416
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