Genus: Goronyosaurus AZZAROLI, DE GUILI, & TORRE, 1972
Etymology:

Species: nigeriensis (SWINTON, 1930)
Etymology: In reference to the country of Nigeria, where the specimen was found.
= Mosasaurus nigeriensis SWINTON, 1930

Lectotype: BMNH R 5674

Locality: Benbow Hill, south-east of village of Gilbedi, Sokoto State, Nigeria.

Horizon: Gypsiferous shale member, Dukamaje Formation.

Biostratigraphy:

Age: Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material: 2 associated dorsal vertebrae.

Referred material:

LINGHAM-SOLAR, 2002

BMNH R 14153: Premaxillary, partial maxillary and teeth.

AZZAROLI, De GIULI, FICCARELLI & TORRE, 1975

Locality: Summit of hill overlooking village of Takoka, Sokoto State, Nigeria.

Horizon: Gypsiferous shale member, Dukamaje Formation.

Biostratigraphy:

Age: Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material:

IGF 14750-1: Skull, lacking the occipital portion.

IGF 14750-2: Occipital portion of the skull.

IGF 14750-3: Right pterygoid.

IGF 14750-4: Left pterygoid.

IGF 14750-7: Right humerus.

IGF 14750-8: Left pelvis.

IGF 14750-9: Cervical vertebra.

IGF 14750-17: Dorsal vertebra.

IGF 14750-30: Caudal vertebra.

IGF 14752: Right humerus.

IGF 14753: Left pelvis.

IGF 14754: Dorsal vertebra.

IGF 14755: Caudal vertebra.

3 more cervical, 9 more dorsal, 2 sacral and 10 more caudals.

 

Locality: Kwakwazo, Nigeria.

Horizon:

Biostratigraphy:

Age: Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material:

IGF 14751: Lower jaw.

 

Locality: Gilbedi, Nigeria.

Horizon:

Biostratigraphy:

Age: Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material:

BMNH R5673: Right femur.