†Pseudomyrmex saxulum LaPolla & Greenwalt, 2015: 171, fig. 12 (q.) U.S.A. (Montana, Eocene).

Primary type information: Primary type locality: U.S.A.: Montana, Middle Fork of the Flathead River between Paola and Coal Creeks; Kishenehn Formation. Primary type depository: USNM. Primary type specimen: USNM# 609605.