Liometopum miocenicum is an extinct species of ant in the genus Liometopum. Described by Carpenter in 1930, the fossils of this species are only exclusive to the United States.[1]
Notes and References
Carpenter, F. M. 1930. The fossil ants of North America. Bull. Mus. Comp. Zool. 70: 1-66 (page 8 PDF)