• Incertae sedis in Formicidae: Carpenter, 1930: 19.
• Status as species: Scudder, 1891: 714; Dalla Torre, 1893: 191; Handlirsch, 1907: 861; Bolton, 1995b: 226.
• Junior synonym of †Eoformica pinguis: Dlussky & Rasnitsyn, 2003: 425.

Obsolete combinations

• †Lasius terreus

Citations

• Bolton, B. 1995b. A new general catalogue of the ants of the world. Cambridge, Mass.: Harvard University Press, 504 pp.
• Carpenter, F. M. 1930. The fossil ants of North America. Bulletin of the Museum of Comparative Zoology 70:1-66. PDF
• Dalla Torre, K. W. 1893. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. Vol. 7. Formicidae (Heterogyna). Leipzig: W. Engelmann, 289 pp. PDF
• Dlussky, G. M.; Rasnitsyn, A. P. 2003 ("2002"). Ants (Hymenoptera: Formicidae) of Formation Green River and some other Middle Eocene deposits of North America. Russian Entomological Journal 11:411-436. PDF
• Handlirsch, A. 1907. Die fossilen Insekten und die Phylogenie der rezenten Formen. Ein Handbuch für Paläontologen und Zoologen. Lieferung 6. Leipzig: Wilhelm Engelmann, pp. 801-960.
• Scudder, S. H. 1878. The fossil insects of the Green River shales. Bulletin of the United States Geological and Geographical Survey of the Territories 4:747-776. PDF
• Scudder, S. H. 1891. Index to the known fossil insects of the world, including myriapods and arachnids. Bulletin of the United States Geological Survey 71:1-744. PDF