Stylocyathus d’Orbigny, 1850

Baron-Szabo, Rosemarie C., 2008, Dendrophylliina, Caryophylliina, Fungiina, Microsolenina, and Stylinina, Zootaxa 1952, pp. 1-244 : 65

Genus Stylocyathus d’Orbigny, 1850

(= Stylotrochus de Fromentel, 1862, Type species. Stylotrochus arcuatus de Fromentel, 1862, Senonian of France [Var]).

Type species. Stylocyathus dentalinus d’Orbigny, 1850 , Cenomanian of France .

Diagnosis. Solitary corallum, turbinate or ceratoid, fixed or free. Costosepta compact. Pali in one irregular crown opposite first 2 cycles. Columella trabecular, appearing substyliform or formed by 2 or 3 twisted laths. Wall septothecal. Endothecal dissepiments rare.

Affinities. The genus Stylocyathus d’Orbigny shows close affinities to the genus Stephanosmilia de Fromentel but differs from the latter in having both a different corallum shape and develoment of axial structures (trochoid to subcylindrical, fixed, and pali in two crowns in front of S1 and S 2 in Stephanosmilia ).