Wellsotrochus Squires, 1960

Baron-Szabo, Rosemarie C., 2008, Dendrophylliina, Caryophylliina, Fungiina, Microsolenina, and Stylinina, Zootaxa 1952, pp. 1-244 : 93-94

Genus Wellsotrochus Squires, 1960

(= Kangiliacyathus Floris, 1972 ; Type species. Kangiliacyathus groenlandicus Floris, 1972 , Lower Danian of Denmark [ Greenland]);

(= Levicyathus Filkorn, 1994 , Type species. Levicyathus cairnsi Filkorn, 1994 , Maastrichtian of Antarctic Peninsula [López de Bertodano Formation, Seymour Island]).

Type species. Wellsia cyathiformis Squires, 1958 , Campanian-Maastrichtian (Haumurian) of New Zealand .

Diagnosis. Solitary, discoidal, bowl-shaped to variably conical,?free, with flat, rounded, or somewhat pointed base. Calice circular to slightly elliptical in outline. Costosepta compact, hexamerally arranged. Costae presumed granular. Pali and paliform lobes absent. Columella styliform to sublamellar. Wall imperforate.

Remarks. In creating the genus Wellsotrochus (ex Wellsia ) Squires (1958, p. 57) described its growth form simply as “bowl-shaped” but he included specimens of various growth types, e.g., patellate, turbinatetrochoid, and bowl-shaped, indicating a wide range of growth types as one characteristic of this genus. It should be noted, however, that in most specimens the early juvenile stage is closest to the turbinate form.