Genus DYSCRITELLA Girty, 1911

Type species. Dyscritella robusta Girty, 1911, by original designation. Mississippian; Arkansas, USA .

Diagnosis. Ramose and encrusting colonies with abundant acanthostyles and exilazooecia. Autozooecia parallel to longitudinal direction of the colony in endozone; gradually bending outward in exozone. Diaphragms in autozooecia lacking or very rare; lacking in exilazooecia. Exilazooecia circular to angular in cross section and separated from the autozooecia and from each other by thick walls. Two sizes of acanthostyles may be present. Zooecial walls thin in endozone, rapidly thickening in the exozone.

Remarks. Dyscritella Girty, 1911, generally lacks diaphragms, which are commonly developed in the similar genus Dyscritellina Morozova in Dunaeva and Morozova, 1967.

Occurrence. Devonian to Triassic; worldwide.