ABSTRACT-Permian ammonoids with perrinitids are reported from Kalpin and Qiemo areas in Xinjiang, northwest China.
Nine species, representing nine genera: Parapronorites, Propinacoceras, Medlicottia, Eothinites, Agathiceras,
Prostacheoceras, Metaperrinites, Per rinites, and Tauroceras are described from the Yesanggang Formation of the,
Qiemo area.  Strong uniformity in Permian ammonoid biostratigraphy and provincialism between Xinjiang and Pamir is suggested.