Ajacicyathina

Ajacicyathina Temporal range:
Scientific classification
Kingdom:	Animalia
Phylum:	Porifera
Order:	†Ajacicyathida
Suborder:	†Ajacicyathina Bedford and Bedford 1939
Superfamilies
† Annulocyathoidea Krasnopeeva 1953 † Bronchocyathoidea Bedford and Bedford 1936 † Erbocyathoidea Vologdin and Zhuravleva 1956 † Ethmophylloidea Okulitch 1937 † Lenocyathoidea Zhuravleva 1956 † Pretiosocyathoidea Rozanov 1969 † Sigmocyathoidea Krasnopeeva 1953 † Tercyathoidea Vologdin 1939 † Tumulocyathoidea Krasnopeeva 1953

Ajacicyathina is a prehistoric suborder of sponges in the order Ajacicyathida. It was described in 1939, and is known from the Early Cambrian.