Stephanocyathus Seguenza, 1864

Diagnosis.

Solitary, patellate to bowl-shaped, and free. Costae usually well developed, some of which are sometimes highly spinose. Paliform lobes usually present on all septa. Columella trabecular, papillose, or a solid fusion of axial septal margins.

Type species.

Stephanocyathus elegans Seguenza, 1864, by subsequent designation (Wells 1936).