Tomeia witecki was named by Eltink et al. (2017) [Tomeia witecki is distinguished from all other capitosaurs due to the following combination of characters: (1) intervening margin of parasphenoid preventing the ventral contact between exoccipital and pterygoid; (2) short suture between the parasphenoid and pterygoid when compared to those of derived forms from Middle and Late Triassic; (3) presence of extensive ornamentation on the ventral surface of the parasphenoid, a feature usually observed in Middle-Late Triassic capitosaurs; (4) oblique ridge more dorsally placed in comparison to other early-diverging capitosaurs like Watsonisuchus magnus and Edingerella madagascariensis; (5) a slit-like posttemporal fenestra (different from the more triangular and wide one observed in Watsonisuchus magnus); (6) extremely large paraquadrate foramen relative to the accessory paraquadrate foramen. Tomeia witecki also possesses a single autapomorphy: the descending postparietal lamina extending further ventrolaterally, occupying part of the ventral border of posttemporal fenestra, excluding the exoccipital from the border of the posttemporal fenestra.]. Its type specimen is UFSM 11408, a partial skull (Right posterior corner of the skull, including otic notch, occipital region, parasphenoid, and pterygoid; a right fragment of the orbital region; an almost comp), and it is a 3D body fossil. Its type locality is Sítio Bica São Tomé 5, which is in an Induan/Olenekian terrestrial sandstone/conglomerate in the Sanga do Cabral Formation of Brazil.