ammonites
Bamyaniceras tersum Leonova 1992 (ammonite)

Cephalopoda - Prolecanitida - Medlicottiidae

Full reference: T. B. Leonova. 1992. Ammonoidea, in Perm' Darvaz-Zaalayskoy zony Pamira: fusulinidy, ammonoidei, stratigrafiya [The Permian system in the Darvaz-Transalai zone of the Pamirs: fusulines, ammonoids, stratigraphy]. Trudy Paleontologicheskogo Instituta 253:110-167

Belongs to Bamyaniceras according to T. B. Leonova 1992

Sister taxa: Bamyaniceras australe, Bamyaniceras baranovi, Bamyaniceras bornemani, Bamyaniceras darwasi, Bamyaniceras knighti, Bamyaniceras loeiense, Bamyaniceras magnum, Bamyaniceras multilobatum, Bamyaniceras obliquinodosum, Bamyaniceras orientale, Bamyaniceras simplex, Bamyaniceras spatiosum

Type specimen: PIN 4240/42. Its type locality is Charymdara River, sample 50z, which is in an Artinskian marine horizon in the Zygar Formation of Tajikistan.

Ecology: fast-moving nektonic carnivore

Average measurements (in mm): shell width 3.30, shell diameter 14.0