† Triforis martini Dickerson, 1917

Triforis martini Dickerson, 1917: 176, pl. 30, fig. 8a, 8b.

Type locality. United States, Washington, Lewis County, Near Vader, on east bank of the Cowlitz River, just back of the Greeco ranch house, about four miles east of Vader .

Type stratum. Oligocene.

Type material. MCAS 421, holotype .

Distribution. United States, Washington (Dickerson 1917).

Geological age. Oligocene (Dickerson 1917).