†Eoformica brevipetiola LaPolla & Greenwalt, 2015: 171, fig. 13 (m.) U.S.A. (Montana, Eocene, Lutetian).

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#609610.