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Lophospira
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Lophospira

fossil gastropod
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Article History

Lophospira, genus of extinct gastropods (snails) found as fossils in marine rocks of Ordovician to Devonian age (488 million to 359 million years old). The shell consists of a series of whorls arranged much like a series of ascending steps, each successive whorl smaller than the one below it. The apex of the shell is closed by a small cone-shaped whorl.

This article was most recently revised and updated by Richard Pallardy.