† Triforis washingtoniana Dickerson, 1915

Triforis washingtoniana Dickerson, 1915: 63, pl. 6, fig. 13.

Type locality. United States, Washington, in the west bank of the Cowlitz River about 1,75 miles southeast of Vader ( Little Falls).

Type stratum. Eocene, Cowlitz Phase, Tejon Group.

Type material. MCAS 362, holotype .

Distribution. United States, Washington (Dickerson 1915).

Geological age. Eocene (Dickerson 1915).