Hymenoptera, Apocrita, Formicoidea, Formicidae, Myrmeciinae, †Myrmeciities, species (incertae sedis)

The hypotype, and only, specimen of the extinct genus Myrmeciities from the Klondike Mountain Formation, Washington. This genus is 49.5 +/-.05 million years old placing it in the late Ypresian, of the Eocene. This specimen is probably a queen but due to the angle and quality of preservation, the possibility of it being a worked is present. As such the placement of the specimen is left at genus.

The area it this time was dominated by flora and fauna which are the early precursors of the Eastern US and Eastern Asian hardwood forests, while possessing elements of the current conifer forests still present in the region. The environment which this specimen lived in was upland subtropical/temperate forests surrounding a lake/string of lakes which were the southernmost in a string of lakes which extended 1000km into Central British Columbia.

The Formicidae subfamily Myrmeciinae is now found only in Australia and New Caledonia and contains two modern species in two genera.