Petraeomyrmex

There is a single species from Florissant shale (Oligocene) from Colorado, USA.

Identification
Female. - Small; head subquadrate; scapes short, thick; eyes small, situated on the sides of the head, anterior to the middle line; petiole very small; forewing with two cubital cells.

Castes
queen

Additional References

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


 * Ward, P.S., Brady, S.G., Fisher, B.L. & Schultz, T.R. 2010. Phylogeny and biogeography of Dolichoderinae ants: effects of data partitioning and relict taxa on historical inference. Systematic Biology 59: 342-362