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Orthoconic nautiloid cephalopod genera
Published online by Cambridge University Press: 01 May 2009
Abstract
Use of the nautiloid cephalopod generic names Orthoceras and Michelinoceras is briefly reviewed. Two new genera, Imbricatoceras (upper Ordovician-Silurian) and Radnoroceras (Wenlock-Ludlow), are proposed for common taxa with distinctive ornamentation.
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