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Ajacicyathida Temporal range: Early Cambrian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Porifera
Clade:	†Archaeocyatha
Order:	†Ajacicyathida Bedford and Bedford 1939
Suborders
†Ajacicyathina Bedford and Bedford 1939 †Dokidocyathina Vologdin 1957 †Erismacoscinina Debrenne et al. 1989

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

Taxonomy

In addition to the suborders Ajacicyathina, Dokidocyathina, and Erismacoscinina, the following genera are placed incertae sedis within Ajacicyathida:

• †Botocyathus
• †Kidjasocyathus Rozanov 1960
• †Procyathellus
• †Ptretiosocyathus Rozanov 1966
• †Stephanicyathus Voronova et al. 1987

References

1. ^ Ajacicyathida in the Paleobiology Database

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