†Egiinocyathus Fonin 1983 (sponge)
Full reference: V. D. Fonin. 1983. Novyye nepravil'nye arkheotsiaty is nizhnekembriskiykh otlozheniy severo-zapadnoy Mongolii. The new irregular archaeocyatha from the lower cambrian deposits of the north-west of Mongolia. Trudy - Sovmestnaya Sovetsko-Mongol'skaya Paleontologicheskaya Ekspeditsiya 20:11-14
Parent taxon: Irregulares according to V. D. Fonin 1983
Sister taxa: Archaeocyathida, Aruntacyathus, Batchatocyathus, Batenevia, Bicyathus, Cornutocyathus, Graphoscyphia, Kazakhstanicyathida, Osadchiites, Palmericyathellus, Retilamina, Rhizacyathus
Subtaxa: none
Ecology: stationary intermediate-level epifaunal suspension feeder