Species: planus EFIMOV, 1982
Etymology: Latin, plani, "flat."

Holotype: PIN 3727/1

Locality: Andarak, Kirgiziya, European Russia.

Horizon: Alayan Stage.

Biostratigraphy:

Age: Middle Eocene Epoch, Paleogene Period, Lower Tertiary Subera, Lower Cenozoic Era.

Material: Posterior portion of a skull.