Microzemiotes sonselaensis was named by Burch et al. (2024). Its type specimen is DMNH PAL 2018-05-0017, a mandible (partial left dentary with three preserved teeth, partially distorted on the lingual side), and it is a 3D body fossil. Its type locality is Jim Camp Wash, which is in a Norian fluvial sandstone in the Chinle Formation of Arizona. It is the type species of Microzemiotes.