ammonites
Spiriferella borealica Kalashnikov 1998 (lamp shell)

Rhynchonellata - Spiriferida - Spiriferellidae

Full reference: N. V. Kalashnikov. 1998. Permian Spiriferids from the North of European Russia 1-139

Belongs to Spiriferella according to N. V. Kalashnikov 1998

Sister taxa: Spiriferella antefurcata, Spiriferella arctica, Spiriferella australasica, Spiriferella bituchensis, Spiriferella burgaliensis, Spiriferella calcarata, Spiriferella clypeata, Spiriferella consimilis, Spiriferella cundlegoensis, Spiriferella embrithes, Spiriferella etheridgei, Spiriferella gloverae, Spiriferella gravis, Spiriferella hinganensis, Spiriferella interplicata, Spiriferella jilongensis, Spiriferella keilhavii, Spiriferella keilhaviiformis, Spiriferella lata, Spiriferella leviplica, Spiriferella levis, Spiriferella loveni, Spiriferella magna, Spiriferella modesta, Spiriferella mugunica, Spiriferella nepalensis, Spiriferella orientensis, Spiriferella ovata, Spiriferella persaranae, Spiriferella personata, Spiriferella primaeva, Spiriferella propria, Spiriferella pseudodraschei, Spiriferella pseudotibetana, Spiriferella rajah, Spiriferella salteri, Spiriferella saranae, Spiriferella scobina, Spiriferella scobinoidea, Spiriferella scopulosus, Spiriferella simplex, Spiriferella sinica, Spiriferella subsalteri, Spiriferella sulcifer, Spiriferella supplanta, Spiriferella tetralobata, Spiriferella turusica, Spiriferella unicostata, Spiriferella vaskovskii, Spiriferella vojnowskii, Spiriferella wangi, Spiriferella wimanni, Spiriferella yukonensis

Type specimen: PIN 4605/55. Its type locality is Tab-Yo River, Outcrop 94, Sample 2435, Pai-Khoy Range, which is in a Kungurian marine siliciclastic in the Talata Formation of the Russian Federation.

Ecology: stationary epifaunal suspension feeder

Average measurements (in mm): valve 33.1 x 38.3