Chronomyrmex

Chronomyrmex and Eotapinoma, from Canadian Campanian amber (79-78 Ma), are the only dolichoderines known from the Cretaceous. They were originally placed in the Leptomyrmecini and Tapinomini, respectively, but are now treated as stem-group dolichoderines (Dlussky, 1999; McKellar et al., 2013; Boudinot et al., 2016; Perrichot et al., 2019).

Nomenclature
Taxonomic history
 * † CHRONOMYRMEX [Dolichoderinae: Leptomyrmecini]
 * †Chronomyrmex McKellar, Glasier & Engel, 2013: 586. Type-species: †Chronomyrmex medicinehatensis, by original designation.
 * †Chronomyrmex in Dolichoderinae, Leptomyrmecini: McKellar, et al. 2013a: 586.
 * †Chronomyrmex as stem-taxon to Dolichoderinae: Borysenko, 2017: 19.