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Euomphalus
Genus of archaeogastropods From Wikipedia, the free encyclopedia
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Euomphalus is a genus of fossil marine gastropods known to have lived from the Silurian to the Middle Permian.[1][2]
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Description
Euomphalus is characterized by a closely coiled shell with a depressed to slightly elevated spire and a channel-bearing angulation (a selenizone) on the upper surface of the whorls. The lower surface of the whorls is rounded to angular.[1]
Amphiscapha, Philoxene, and Straparollus are among similar related genera. Serpulospira, also related, differs in having a broadly open spiral in the adult form.
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Taxonomy
Euomphalus is the type genus of the family Euomphalidae. Euomphalus pentangulatus (Sowerby, 1814) is its type species.
Species
- Euomphalus pentangulatus Sowerby, 1814(type)
- Euomphalus radiatus Menke, 1850: synonym of Heliacus (Heliacus) areola bicanaliculatus (Valenciennes, 1832) represented as Heliacus areola bicanaliculatus (Valenciennes, 1832)
References
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