Брахиоподы. Отряд Billingsellida (Schuchert, 1893)
Список родов отряда Billingsellida (по данным The Paleobiology Database):
Acanthotoechia, Admixtella, Anchigonites, Antigonambonites, Apomatella, Arctohedra (type), Asymphylotoechia, Atelelasma, Atelelasmoidea, Billingsella Hall and Clarke 1892, Clinambon, Clitambonites (type), Cymbithyris, Eosotrematorthis, Eremotoechia, Estlandia, Fistulogonites, Gonambonites (type), Hemipronites, Ilmarinia, Iru, Jaanussonites, Kozhuchinella, Kullervo, Lacunarites, Ladogiella (subjective synonym), Martellia Wirth 1936, Neumania, Oslogonites, Pahlenella, Peritritoechia, Pinatotoechia Benedetto 2001, Platytoechia, Polytoechia, Pomatotrema, Progonambonites (subjective synonym), Protambonites, Raunites, Saccogonum, Tritoechia, Vellamo, Xenorthis.
Текст добавил: Kach