Heliacus areola

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Euomphalus is a genus of fossil marine gastropods known to have lived from the Silurian to the Middle Permian. 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.

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