Hyolitha - Orthothecida - Circothecidae

Full reference: V. V. Missarzhevsky. 1974. Novye dannye o drevnejshikh okamenelostyakh rannego kembriya Sibirskoj platformy. Biostratigraphiya i paleontologiya nizhnego kembriya Europy i severnoj Azii 179-189

Belongs to Kotuyitheca according to V. V. Missarzhevsky 1974

Sister taxa: none

Type specimen: GIN 4287/2. Its type locality is M321/31, Zrueachaka River near Nemakit-Daldyn River Mouth, which is in a Tommotian carbonate limestone in the Pestrotsvet Formation of the Russian Federation.

Ecology: stationary epifaunal suspension feeder