Retusa subspissa (Conrad, 1846) Figure 5K

Bulla subspissa Conrad, 1846: 20, pl. 1, fig. 29.

Type locality.

Calvert Cliffs, Maryland, USA; stratum: Calvert Formation; age: Miocene.

Type material.

Syntype, ANSP IP30641, 1 shell (as "probable holotype" in Moore 1962: 100; as “type?” in Richards 1968: 193).

Current taxonomic status.

Retusa subspissa (Conrad, 1846), but possible synonym of Retusa conulus (Deshayes, 1824) (Martin 1904).