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An ammonite of the genus Hoploscaphites taken by me on 3-13-05. This one is from the Pierre Seaway strata of South Dakota. Much of the original nacre (mother-of-pearl) shell is still intact. Ammonites are a type of extinct cephalopod related to nautiluses and squids.

Though filename says Holoscaphites, this is wrong. Its Hoploscaphites.

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current19:03, 20 January 2007Thumbnail for version as of 19:03, 20 January 20071,024 × 964 (239 KB)Rick Swarts (contribs)[ source and rights]

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