Geological Magazine

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Cameral Deposits in Orthoconic Nautiloids

Rousseau H. Flowera1

a1 New Mexico Institute of Mining and Technology, Socorro, New Mexico, U.S.A.

Abstract

Previous investigations of the cameral deposits of nautiloids are reviewed, with a discussion of their morphology, their distribution in shells, and growth relationships with other shell parts. Cameral deposits are developed commonly in the orders Actinoceratida, Michelinoceratida, Discosorida, and Oncoceratida. While the patterns and growth relationships of cameral and siphonal deposits are specific, and therefore of great potential taxqnomic value, the presence of such structures alone is not a valid basis for the recognition of species or genera.

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