Gastropoda - Opisthobranchia - Retusidae
Alternative combination: Cylichnella tantilla
Full reference: F. M. Anderson and G. D. Hanna. 1925. Fauna and stratigraphic relations of the Tejon Eocene at the type locality in Kern County, California. Occasional Papers of the California Academy of Sciences 11:1-249
Belongs to Cylichnina according to R. L. Squires 1984
See also Anderson and Hanna 1925, Squires 1987, Squires 1988, Squires 1999, Squires and Demetrion 1992, Stewart 1927 and Turner 1938
Sister taxa: Cylichnina coelata, Cylichnina petrosa, Cylichnina turneri, Retusa (Cylichnina) aequiattenuata, Retusa (Cylichnina) conutus, Retusa (Cylichnina) galba, Retusa (Cylichnina) marylandica, Retusa (Cylichnina) subspissa
Type specimen: CAS 958. Its type locality is CAS 711, Grapevine Canyon, which is in a Lutetian marine sandstone in the Tejon Formation of California.
Distribution:
• Eocene of Mexico (2 collections), United States (81: California, Oregon, Washington)
• Paleocene of United States (2: California)
Total: 85 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.