Subtumulocyathellus OSADCHAYA, 1979
Specimen-type: Subtumulocyathellus vulgaris holotype, OSADCHAYA& others, 1979, pl. 11, fig.1
Systematics:
Order: AJACICYATHIDA R. Bedford& J. Bedford, 1939
Suborder: AJACICYATHINA R. Bedford& J. Bedford, 1939
Superfamily: ANNULOCYATHOIDEA Krasnopeeva, 1953
Family: TUMULIFUNGIIDAE Rozanov, 1989