Deltocyathus Milne Edwards & Haime, 1848

Baron-Szabo, Rosemarie C., 2008, Dendrophylliina, Caryophylliina, Fungiina, Microsolenina, and Stylinina, Zootaxa 1952, pp. 1-244 : 63

Genus Deltocyathus Milne Edwards & Haime, 1848

(= Discosmilia Alloiteau, 1958 , Type species. Discosmilia analavelonensis Alloiteau, 1958 , Upper Campanian-Maastrichtian of Madagascar).

Type species. Turbinolia italicus Michelotti, 1838 , Tertiary of Italy (see Milne Edwards & Haime, 1848c).

Diagnosis. Solitary, discoid to patellate. Costosepta laminar, exsert, compact. Septal margins smooth or nearly smooth. Pali or paliform lobes opposite all cycles, forming elongate segments. Columella papillose. Endothecal dissepiments few in number. Wall septothecal.

Remarks. Alloiteau (1958, p. 196ff.) stated that the presence of a parathecal-synapticulothecal wall was one of the generic characteristics of the genus Discosmilia Alloiteau, 1958 . Therefore, based on the original description, Baron-Szabo (2002, p. 172) concluded that there was a close resemblance to the genus Sakalavicyathus . However, investigation of the type material of Discosmilia revealed the absence of a parathecal-synapticulothecal wall but the existence of a rather (parathecal-) septothecal wall. Moreover, the septal arrangement seems to correspond well with that of Deltocyathus . Therefore, the assignment to the latter genus is suggested.