ammonites
Streptorhynchus pajkhoicus Ustritsky 1960 (lamp shell)

Strophomenata - Orthotetida - Schuchertellidae

Full reference: V. I. Ustritsky. 1960. Permskie brakhiopody Pay-Khoya (Inarticulata, Strophomenidae i Chonetidae). Trudy Nauchno-Issledovatel'skogo Instituta Geologii Arktiki 111:93-124

Belongs to Streptorhynchus according to V. I. Ustritsky and G. E. Chernyak 1963

Sister taxa: Streptorhynchus broilii, Streptorhynchus capuloides, Streptorhynchus conicus, Streptorhynchus costatus, Streptorhynchus craticulatus, Streptorhynchus cyrano, Streptorhynchus hoskingae, Streptorhynchus inaequiornatus, Streptorhynchus jilinensis, Streptorhynchus johnstonei, Streptorhynchus kayseri, Streptorhynchus khwaense, Streptorhynchus lenticularis, Streptorhynchus liuricus, Streptorhynchus longlinensis, Streptorhynchus longyangensis, Streptorhynchus luluigui, Streptorhynchus memor, Streptorhynchus minutus, Streptorhynchus mistus, Streptorhynchus operculatus, Streptorhynchus ovata, Streptorhynchus pelargonatus, Streptorhynchus pendulus, Streptorhynchus perfidiabadensis, Streptorhynchus plata, Streptorhynchus reliquus, Streptorhynchus shumardianus, Streptorhynchus sibiricus, Streptorhynchus sinuatum, Streptorhynchus stoschensis, Streptorhynchus sulculatum, Streptorhynchus tenuiplicatus, Streptorhynchus tibetanus, Streptorhynchus tuquanensis, Streptorhynchus variabilis

Type specimen: Its type locality is Liur-Yaga River, Zhuruyka creek, outcrop 101, bed a, Pay-Khoy Range, which is in a Kungurian marine horizon in the Talata Formation of the Russian Federation

Ecology: stationary low-level epifaunal suspension feeder