Wikipedia reports, “Pyozia (Fig. 1) is an extinct genus of basal Middle Permian varanopid synapsid known from Russia. It was first named by Jason S. Anderson and Robert R. Reisz in 2004 and the type species is Pyozia mesenensis. Pyozia mesenensis is known from the holotype PIN 3717/33, a three-dimensionally preserved partial skeleton including a nearly complete skull. It was collected from the Krasnoschelsk Formation, dating to the Capitanian stage of the Guadalupian epoch, about 265.8-263 million years ago.”
Anderson and Reisz (2004) nested Pyozia between Archaeovenator and Mycterosaurinae + Vanranodontidae.
In the large reptile tree (not yet updated) Pyozia nests with Orovenator (Fig 2) in the protodiapsida, which includes Archaeovenator and Mycterosaurus, outside of the Synapsida, which includes Varanops and Varanodon.
Reisz et al. 2011 nested Orovenator with Lanthanolania (a rib glider known from a skull only) and basal diapsids like Araeoscelis and basal Younginiformes like Tangasaurus, but Reisz et al. included the referred specimen, which has upper temporal fenestra. The holotype and referred specimens show several differences among the bones they share in common, so probably they are not related. Their combination creates a chimaera with traits not present in the holotype. Better to test just the holotype.
Anderson JS and Reisz RR 2004. “Pyozia mesenensis, a new, small varanopid (Synapsida, Eupelycosauria) from Russia: “pelycosaur” diversity in the Middle Permian”. Journal of Vertebrate Paleontology 24: 173–179.
Reisz RR, Modesto SP and Scot DMT 2011. A new Early Permian reptile and its significance in early diapsid evolution. Proceedings of the Royal Society, London B