Biplica mathewsonii (Gabb, 1864)

Cunha, Carlo M. & Salvador, Rodrigo B., 2018, Type specimens of fossil " Architectibranchia " and Cephalaspidea (Mollusca, Heterobranchia) in the Academy of Natural Sciences of Philadelphia, Zoosystematics and Evolution 94 (2), pp. 505-527 : 505

Biplica mathewsonii (Gabb, 1864) Figure 3 U–V

Cinulia mathewsonii Gabb, 1864: 111, 225, pl. 19, fig. 65.

Type locality.

Bull’s Head Point, Martinez, California, USA; stratum: uncertain [likely Chico Formation]; age: Cretaceous.

Type material.

Lectotype, ANSP IP4262 (designation by Stewart 1926: 437, pl. 24, fig. 11).

Remarks.

Popenoe (1957: 434) points out that Gabb’s material from Bull’s Head Point could represent a non-Cretaceous locality/horizon or be Paleogene material mixed with Gabb’s Cretaceous specimens.

Current taxonomic status.

Biplica mathewsonii (Gabb, 1864) ( Popenoe 1957).