Ajacicyathida

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: