Nalivkinicyathus BOYARINOV& OSADCHAYA, 1986
Specimen-type:
Porocyathellus cyroflexus holotype, OSADCHAYA& others, 1979,
pl. 8, fig. 1-2
Systematics:
Order:
AJACICYATHIDA R. Bedford& J. Bedford, 1939
Suborder: AJACICYATHINA
R. Bedford& J. Bedford, 1939
Superfamily: ETHMOPHYLLOIDEA
Okulitch, 1937
Family: GLORIOSOCYATHIDAE Rozanov, 1969