Species: mendrezi HUTTENLOCKER & SMITH, 2017
Etymology: In honor of Leonid Tatarinov for his contributions to whaitsoid systematics and therocephalian funcitonal anatomy.
Holotype: SMA-PK-K10990
Locality: Badshock, De Hoop 117, near Beaufort West, Western Cape Province, South Africa.
Horizon: Hoedemaker Member, Teekloof Formation.
Biostratigraphy: Tropidostoma Zone.
Age: Lower Wuchiapingian Stage, Lopingian Epoch, Late Permian.
Material: Partial skull with dentaries preserved inocclusion, missing most of the braincase, occiput, and postdentary bones.
Referred material:
SAM-PK-K10984: Weathered snout preserving most of the left antorbital region, palate, and maxillary canine and postcanine alveoli.