Rhynchonellata - Spiriferida - Trigonotretidae

Full reference: V. M. Zavodowsky. 1968. Spiriferacea. Novye Vidy Drevnikh Rasteniy i Bespozvonochnykh SSSR 2:149-160

Belongs to Neospirifer according to V. M. Zavodowsky 1968

Sister taxa: Neospirifer (Neospirifer), Neospirifer amphigyus, Neospirifer amplus, Neospirifer apothescelus, Neospirifer arthurtonensis, Neospirifer bakeri, Neospirifer cameratiformis, Neospirifer cameratus, Neospirifer chivatschensis, Neospirifer concentricus, Neospirifer crassiconchialis, Neospirifer dunbari, Neospirifer fasciger, Neospirifer foordi, Neospirifer formulosus, Neospirifer goreii, Neospirifer gortani, Neospirifer grandis, Neospirifer grandis, Neospirifer groenwalli, Neospirifer huecoensis, Neospirifer incipiens, Neospirifer invisus, Neospirifer kansasensis, Neospirifer kimsari, Neospirifer koewbaidhoni, Neospirifer lanceolatus, Neospirifer latus, Neospirifer licharewi, Neospirifer mansuetus, Neospirifer mengjiushanensis, Neospirifer neali, Neospirifer neocameratus, Neospirifer neostriatus, Neospirifer notialis, Neospirifer omolonensis, Neospirifer orientalis, Neospirifer paranitiensis, Neospirifer parenensis, Neospirifer permicus, Neospirifer placidus, Neospirifer plana, Neospirifer praenuntius, Neospirifer pseudonitiensis, Neospirifer rhomboidalis, Neospirifer rhomboides, Neospirifer shenshuensis, Neospirifer sodalis, Neospirifer sterlitamakensis, Neospirifer striatus, Neospirifer subfasciger, Neospirifer subovalis, Neospirifer sulcoprofundus, Neospirifer tajmyrica, Neospirifer tegulatus, Neospirifer texanus, Neospirifer tricostatus, Neospirifer trimuensis, Neospirifer triplicatus, Neospirifer undatus, Neospirifer vagaensis, Neospirifer venezuelensis, Neospirifer wynneiformis, Wadispirifer ravana, Wadispirifer hongdeensis

Type specimen: TsGM 25,26/8234. Its type locality is Russkaya-Omolon River, Omolon Svita (1957 coll), which is in a Roadian/Wordian carbonate limestone in the Omolon Formation of the Russian Federation.

Ecology: stationary epifaunal suspension feeder

Average measurements (in mm): valve 35.0 x 60.0