Cyclostomatida

Cyclostomatida, or cyclostomata (also known as cyclostomes), are an ancient order of stenolaemate bryozoans which first appeared in the Lower Ordovician. It consists of 7+ suborders, 59+ families, 373+ genera, and 666+ species. The cyclostome bryozoans were dominant in the Mesozoic; since that era, they have decreased. Currently, cyclostomes seldom constitute more than 20% of the species recorded in regional bryozoan faunas.

Diaperoeciidae is a family of bryozoans belonging to the order Cyclostomatida.

Entalophoridae is a family of bryozoans belonging to the order Cyclostomatida.

Crisinidae is a family of bryozoans belonging to the order Cyclostomatida. The family was established by French naturalist Alcide d'Orbigny in 1853.

Stigmatoechidae is a family of bryozoans belonging to the order Cyclostomatida.

Cerioporidae is a family of bryozoans belonging to the order Cyclostomatida.

Crisiidae is a family of bryozoans in the suborder Articulina.

Oncousoeciidae is a family of bryozoans belonging to the order Cyclostomatida.

Horneridae is a family of bryozoans belonging to the order Cyclostomatida.

genus of bryozoans

Pustuloporidae is a family of bryozoans belonging to the order Cyclostomatida.

Bicrisia is a genus of bryozoans belonging to the family Crisiidae.

Plagioeciidae is a family of bryozoans, containing many genera once assigned to Diastoporidae. Extant representatives include Microecia.

species of bryozoan

Cinctiporidae is a bryozoan family in the order Cyclostomatida.

Stomatoporidae is a family of bryozoans belonging to the order Cyclostomatida.

Crisia is a genus of bryozoans in the family Crisiidae. Some species are known from the fossil record.

genus of bryozoans

Pseudidmonea is a genus of bryozoans belonging to the monotypic family Pseudidmoneidae.

Articulina is an extant suborder of bryozoans in the order Cyclostomatida.

species of bryozoan

Stomatoporina is a genus of stenolaematan bryozoans. The type species is Stomatoporina incurvata. Like almost all bryozoans, it is colonial.

Petaloporidae is a family of bryozoans belonging to the order Cyclostomatida.

Calvetiidae is a family of bryozoans belonging to the order Cyclostomatida.