Cephalomyrmex

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

Identification
Female. - Robust; head exceedingly large, rounded; thorax short; gaster very small; antennae abbreviated, the funiculus apparently with only five or six segments; petiole pedunculate, postpetiole short but broad. (Venation unknown).

Castes
queen

Nomenclature
The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants. Barry continually updates his Catalogue and thus the following information reflects an up-to-date accounting of ant taxonomy. We are indebted to Barry for making this information available.

Genus *CEPHALOMYRMEX Taxonomic history
 * Cephalomyrmex Carpenter, 1930: 37. Type-species: *Cephalomyrmex rotundatus, by original designation.
 * Cephalomyrmex incertae sedis in Myrmicinae: Carpenter, 1930: 37; Hölldobler & Wilson, 1990: 16; Bolton, 1994: 106; Bolton, 1995b: 140.