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Extinct species of gastropod From Wikipedia, the free encyclopedia
†Centrifugus is an extinct species of fossil sea snail, a marine gastropod mollusk in the family Euomphalidae, which paleontologists place in the order Archaeogastropoda.
Centrifugus Temporal range: Upper Silurian | |
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Genus: | †Centrifugus Bronn, 1934 |
This species was originally known from the Upper Silurian of northern Europe (Gotland).
The shell has a nearly flat spire, and is widest across the base, which is marked by a peripheral keel. The upper side of the aperture has a narrow slit, and a selenizone located close to the upper suture. Five strong spiral cords alternating with weaker ones cover the upper surface of the shell.
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