Species: primus SERENO, WILSON & CONRAD, 2004
Etymology: Latin, prmus, "first": Named for its significance as one of the earliest abelisaurids with textured external skull surfaces.

Holotype: MNN IGUI

Locality; Iguidi, west of In Abangharit, Agadez District, N17°56', E5°37", Niger.

Horizon: Echkar Formation, Tegama Group (Series).

Biostratigraphy:

Age: Cenomanian Stage, Uppermiddle Gallic Epoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material: Partial cranium lacking th eposterolateral portions of the skull roof and palate.

Top; Right nasal dorsal view; Middle; Top view; Bottom, Side view.

A) Third to fifth alveoli of the left maxilla in ventral view; B) Left maxilla; C) Left maxilla of a comtempoary abelisaourd (Lamanna et al, 2002).