Milleretta rubidgei (Broom 1938) specimen RC70 Late Permian, ~3.5 cm skull length was derived from a sister to Milleretta RC14 and phylogenetically preceded Orobates, Bolosaurus, Stephanospondylus. That makes it ancestral to most known lepidosauromorphs.

Distinct from the RC14 specimen of Milleretta, the skull of RC70 had a lower, sharper rostral profile. The indentation at the rear of the skull was deeper, shifting the quadratojugal forward. There was no indication of any lateral temporal opening. The supraoccipital was wider. The parsphenoid lateral processes were less prominent. The teeth are longer, yet this was likely still a plant-eater. The parietal was relatively shorter and wider. The postparietal bones (supratempora and tabular) are wider apart and directed more laterally.

Broom R 1938 On the Structure of the Reptilian Tarsus: Proceedings of the Zoological Society of London, v. 133, 108, p. 535-542.

Broom R 1948. A contribution to our knowledge of the vertebrates of the Karroo beds of South Africa: Transactions of the Royal Society of Edinburgh, Endinburgh 61: 577-629.

Gow CE 1972. The osteology and relationships of the Millerettidae (Reptilia: Cotylosauria). Journal of Zoology, London 167:219-264.

wiki/Milleretta