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Mosasaur Predation on Upper Cretaceous Nautiloids and Ammonites from the United States Pacific Coast

Erle G. Kauffman
PALAIOS
Vol. 19, No. 1 (Feb., 2004), pp. 96-100
Stable URL: http://www.jstor.org/stable/3515798
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Mosasaur Predation on Upper Cretaceous Nautiloids and Ammonites from the United States Pacific Coast
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Abstract

A remarkable encounter between two Cretaceous mosasaurs of the same species and a sick or recently dead nautiloid (Argonautilus catarinae Sundberg) is recorded. It is possible that the mosasaur was training its young to attack shelled cephalopods. This is the first recorded attack by two mosasaurs on a nautiloid in the eastern Pacific Ocean, although ammonites preyed upon by mosasaurs are known from the west coast of North America.

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