Belebey vegrandis (Ivakhnenko 1973) Cisuralian, middle Permian ~284 mya, 4 cm skull length, was derived from a sister to Milleretta RC70 and was a sister to Bolosaurus.
Distinct from RC70, Belebey had orbits higher on the skull and a very low lateral temporal fenestra formed by embayment of the jugal. The "brows" anterior to the orbits were much wider. The teeth were uniquely wide and angled in the jaws. The pineal foramen was much larger. There was no posterior embayment of the skull. The occipital plane was vertical. The dentary was ventrally concave. The posterior dentary rose to a high coronoid process. |
