Acteon biplicatus (Gabb, 1860) Figure 1 O–P

Acteonina biplicata Gabb, 1860a: 93, pl. 2, fig. 13 [non d’Orbigny].

Type locality.

-New Jersey, USA; stratum: "Lower Green Marls" (Navesink Formation); age: Cretaceous.

Type material.

Syntypes, ANSP IP19466 (as “type” in Richards 1968: 107), 1 shell, ANSP 19467, 1 shell.

Current taxonomic status.

Acteon gabbana Whitfield, 1892 (Whitfield 1892, Richards and Ramsdell 1962).