Phratochronis
Phratochronis is an extinct genus of chroniosuchid reptiliomorph from upper Permian mudstone deposits of Dashankou locality, Xidagou Formation of China. It was first named by Jin-Ling Li and Zheng-Wu Cheng in 1999, from a maxilla and premaxilla with almost complete dentition. The type species is Phratochronis qilianensis. The name of a [biological genus|generic name] means “brothers of a clan” + “late” in reference to its taxonomic position, and the specific name referring to the chain of mountains where the type specimen was found.