ammonites
Polidevcia vorgaschorica Guskov and Demskaja 1984 (pointed nut clam)

Bivalvia - Protobranchia - Nuculanidae

Alternative combination: Nuculana vorgaschorica

Full reference: V. A. Guskov and G. I. Demskaja. 1984. Taxonomic descriptions. Permskie Morskie Otlozheniya I Dvustvorchatie Mollyuski Sovetskoi Arktiki

Belongs to Polidevcia according to M. E. Clapham 2011

Sister taxa: Polidevcia abrupta, Polidevcia aequilata, Polidevcia antequadrata, Polidevcia arctura, Polidevcia bellistriata, Polidevcia bicarinata, Polidevcia browni, Polidevcia cryptica, Polidevcia flexuosa, Polidevcia jamesi, Polidevcia kasanensis, Polidevcia kolyvanica, Polidevcia lunulata, Polidevcia lyonsensis, Polidevcia magna, Polidevcia nodulosa, Polidevcia obesa, Polidevcia ovata, Polidevcia stevensiana, Polidevcia thomasi, Polidevcia tulcumbensis, Polidevcia undosa, Polidevcia zabaikalica

Type specimen: Its type locality is Usinskoe coalfield, Well UK-59, 109 m, Pechora Basin, which is in a Kungurian marine siliciclastic in the Lekvorkuta Formation of the Russian Federation

Ecology: facultatively mobile infaunal deposit feeder-suspension feeder