Ajacicyathina

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

Ajacicyathina Temporal range:
Scientific classification
Domain:	Eukaryota
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