Ouaoufilalites, Korn & Bockwinkel & Ebbighausen & Klug, 2003

Korn, Dieter, Bockwinkel, Jürgen, Ebbighausen, Volker & Klug, Christian, 2003, Palaeobiogeographic and evolutionary meaning of an early Late Tournaisian ammonoid fauna from the Tafilalt of Morocco, Acta Palaeontologica Polonica 48 (1), pp. 71-92 : 83-84

Family Maxigoniatitidae Korn, Klug, and Mapes, 1999 Ouaoufilalites gen. nov.

Derivation of name:AfterJebelOuaoufilal,wherethefaunawasfound.

Type species: Ouaoufilalites ouaoufilalensis sp. nov.

Diagnosis.—Maxigoniatitid with small subglobular adult conch. Umbilical width one third of the conch diameter, umbilical margin broadly rounded. Aperture and whorl expansion rate low ( WER 1.60 to 1.70). Suture line with narrow, subparallel external lobe, gently curved flanks and moderately high median saddle. Ventrolateral saddle asymmetrical, subacute. Large, V−shaped adventive lobe.

Comparisons.—Morphology of Ouaoufilalites gen. nov. is intermediate between the genera Dzhaprakoceras Popov, 1965 and Bollandites Bisat, 1930 . The flanks of the external lobe are gently curved as in the other two genera, but in Dzhaprakoceras they are parallel, and in Bollandites the external lobe is V−shaped. Conchs of Dzhaprakoceras have a smaller umbilicus (uw/dm less than 0.20), and Bollandites possesses a pronounced subangular umbilical margin and steep umbilical wall.

Occurrence.—Only known from the vicinity of Jebel Ouaoufilal;OuedZnaïguiFormation,earlyLateTournaisian.