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An unusual new lepidopleurid polyplacophoran (Mollusca) from the Germanic Muschelkalk (Triassic)

Published online by Cambridge University Press:  14 July 2015

Gerd Geyer  and
Peter A. Kukla
Gerd Geyer
Affiliation:
Institut für Paläontologie, Pleicherwall 1, D-8700 Würzburg, FRG
Peter A. Kukla
Affiliation:
Institut für Mineralogie, Am Hubland, D-8700 Würzburg, FRG
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Abstract

A fragmentary and probably immature polyplacophoran shell from the Middle Triassic Germanic Muschelkalk is presented. Morphological peculiarities of the specimen are a stiff connection of the head valve to the adjoining intermediate valve and the presence of a yet undescribed brim-like shell constituent, informally called border-plate herein. The unusually well-preserved shell structure is discussed in detail comprising tegmentum, crossed-lamellar p. hypostracum and the (articulamental?) border-plate. Characteristics indicate a systematic position within the order Lepidopleurina.

Type
Research Article
Information
Journal of Paleontology , Volume 64 , Issue 2 , March 1990 , pp. 222 - 228
Copyright
Copyright © The Paleontological Society 

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