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Maclurites
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Maclurites

fossil snail genus
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Article History

Maclurites, extinct genus of Ordovician gastropods (snails) found as fossils and useful for stratigraphic correlations (the Ordovician Period lasted from about 488 million to 444 million years ago). The shell is distinctively coiled and easily recognized. Maclurites also had an operculum, or second shell, that covered the aperture of the larger body shell. Maclurites is characteristic of a group of early gastropods that first appeared in the Late Cambrian and became extinct at the end of the Ordovician.

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