Eoformica

The taxonomomic placement of this genus is uncertain and it is currently considered incertae sedis in Formicidae. There are four species found in Florissant shale (Oligocene) from Colorado, USA.

Identification
Male. - Length, 7.5mm; head small, nearly round, but somewhat broader behind; thorax broad, about twice as wide, and more than twice as long as the head and somewhat broader. Length of head, 1.2mm; thorax, 2.2mm; gaster, 2.7mm.

Castes
Male.

Nomenclature

 * † EOFORMICA [incertae sedis in Formicidae]
 * †Eoformica Cockerell, 1921: 38. Type-species: †Eoformica eocenica (junior synonym of †Eoformica pingue), by monotypy.
 * †Eoformica transferred from Ponerinae to Myrmicinae: Carpenter, 1930: 17.
 * †Eoformica incertae sedis in Formicidae: Dlussky & Rasnitsyn, 2002: 424.
 * † FORMICITES  [collective group name]
 * †Formicites Dlussky, 1981: 75. [Collective group name.]
 * †Formicites material absorbed into †Eoformica: Dlussky & Rasnitsyn, 2002: 424.

Additional References

 * Carpenter, F. M. 1930. The fossil ants of North America. Bull. Mus. Comp. Zool. 70: 1-66