Cyathophoridae Vaughan & Wells, 1943

Family Cyathophoridae Vaughan & Wells, 1943 View in CoL Genus Cyathophora Michelin, 1843

Type species. Cyathophora richardi Michelin, 1843 , Upper Jurassic of France (lectotype designation Zaman & Lathuilière, 2014).

Diagnosis. Colonial, massive, columnar, hemispherical, knobby, plocoid, cerio-plocoid to cerioid in areas of closely spaced corallites. Budding extracalicular. Corallites circular to subpolygonal in outline, separated by a narrow costate peritheca. Costosepta compact, generally non-confluent to subconfluent, occasionally confluent, radially arranged. Sizes of septa range from very short (less of a quarter of the lumen size) to half the lumen size, in which case septa reach the axial region where they sometimes fuse. Axial ends of S1 are vertically discontinuous. No columella. No synapticulae. No pali. Endothecal and exothecal dissepiments tabulate, well-developed. Wall parathecal and septothecal.