Page:The Osteology of the Reptiles.pdf/261

Rh

Temporal opening large, bounded below by squamosal and jugal, above by the parietal or the connected postorbital and squamosal. No quadratojugals ; quadrates small; a parietal foramen; squamosals large; no preparietal. Teeth conical, four or five in premaxilla; one or two large upper caniniform teeth, and five to nine smaller ones posteriorly; no secondary palate, or a rudimentary one (? Scaloposaurus); prevomers separated or fused (Scaloposaurus); an interpterygoidal opening; large posterior palatine vacuities; palate with few or no teeth; postfrontals small or absent; parietal region usually narrow. Mandible with loose symphysis, long dentary, and large coronoid; posterior elements not reduced. Postcranial skeleton largely unknown.

. Middle and Upper Permian. Alopecodon Broom, Pardosuchus Broom, Glanosuchus Broom, Scylacosaurus Broom, Pristerognathus Seeley, Ictidosaurus Broom, Alopecognathus Broom, Scylacorhinus Broom, South Africa.

. Middle and Upper Permian. Ictidosuchus Broom, Arnognathus Broom, Cerdodon Broom, South Africa.

. Middle and Upper Permian. Lycosuchus Broom, Trochosuchus Broom, Hyaenasuchus Broom, South Africa.

. Middle and Upper Permian. Scaloposaurus Owen, Ictidognathus Broom, Simorhinella Broom, Icticephalus Broom, Akidnognathus Haughton, South Africa.

. Middle and Upper Permian. Alopecopsis Broom, Scymnopsis Broom, South Africa.

. Whaitsia Haughton, South Africa.

. Middle and Upper Permian. Lycosaurus Owen, Eriphostoma Broom, Lycorhinus Broom, Scymnorhinus Broom, Alopecorhinus Broom, Scylacoides Broom, South Africa.