Cyrtodontula umbonata

Classification
Phylum: Mollusca
Class: Bivalvia
Order: Arcoida
Family: Cyrtodontidae
Genus: Cyrtodontula
Species: Cyrtodontula umbonata Ulrich, 1895

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Stratigraphic Occurrences

Geographic Occurrences

Map point data provided by iDigBio.

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Sequences (Formations)

C5 Sequence (Lower Whitewater, Waynesville)

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Identification in Hand Sample

Cyrtodontula umbonata from the Whitewater Formation of Richmond, Indiana (OUIP 1847)

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Davis (1998):

Pelecypod. Identified by large size, by broad, prominent beaks, by the characteristic angle of the hinge line and by the posterior shape of the shell. Whitewater.

Fossils of Ohio (1996):

The Ordovician genus Cyrtodonula is represented by C. umbonata (Ulrich), which is medium sized and has prominent beaks and a truncate posterior margin

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