Temporal range: Ypresian, Early Eocene Green River Formation, Sweetwater County, Wyoming, United States
|Holotype of T. lubei rufous hummingbird for scale|
Archibald, Johnson, Mathewes & Greenwood, 2011
Titanomyrma is a fossil genus of giant ant. The latest species to be discovered, Titanomyrma lubei, was described in 2011, when a 49.5 million year old fossilized winged queen ant was found in Wyoming. This fossil is the first body of a giant ant found in the Western Hemisphere. The presence of Titanomyrma in North America is considered to indicate "the first reported cross-Arctic dispersal by a thermophilic insect group".
This taxon was described from Green River Formation, Sweetwater County, Wyoming, United States (Ypresian, Early Eocene).
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- †lubei. †Titanomyrma lubei Archibald, Johnson, Mathewes & Greenwood, 2011: 3680, figs. 2, 3a,b (q.) U.S.A (Eocene).