Engolismaia, Vullo & Cappetta & Néraudeau, 2007

Vullo, Romain, Cappetta, Henri & Néraudeau, Didier, 2007, New sharks and rays from the Cenomanian and Turonian of Charentes, France, Acta Palaeontologica Polonica 52 (1), pp. 99-116 : 112

Genus Engolismaia nov.

Type species: Engolismaia couillardi sp. nov.

Derivation of the name: Derived from Engolisma, the Latin name of the town of Angoulême.

Diagnosis and comparisons.—Small rajiform genus, characterized by minute (up to 1 mm wide), cuspidate teeth, of which the transverse keel develops one to two distinct and blunt pairs of cusplets, slightly lower than the main cusp. The rather prominent medio−labial protuberance bears a single pustule developed from a vertical medial ridge. The root is relatively high.

Engolismaia gen. nov. differs from all other Rajiformes by its well−cusped crown displaying one or two pairs of well−developed rounded lateral cusplets, and by the ornamentation of the apron consisting of one single pustule. Another monospecific sclerorhynchid genus, Baharipristis , can also display a pair of lateral cusplets ( Werner 1989: pl. 26: 4), but these cusplets remain very reduced compared to the main cusp. Moreover, the main cusp of Baharipristis bastetiae is not erect, but clearly inclined labio−lingually.