Genus: Bonatitan MARTINELLI & FORASIEPI, 2004
Etymology: In honor of Dr. Jose F. Bonaparte, due to his immense contribution to the knowledge of Mesozoic vertebrates in South America, and Greek, Titan, a mythical giant.

Species: reigi MARTINELLI & FORASIEPI, 2004
Etymology: In honor of Dr. Osvaldo Reig for his contribution to South American paleontology.

Holotype: MACN-PV RN 821

Locality: Bajo de Santa Rosa Locality, 40°3'32"S, 66°48'5"W, Rio Negro Province, Argentina.

Horizon: Middle Member, Allen Formation, Malargüe Group.


Horizon: Late Campanian-Early Maastrichtian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Complete braincase, middle dorsal vertebra, anterior caudal vertebra, middle caudal neural arch, left humerus, fragment of metacarpal, both femora, both tibiae, left fibula, left calcaneous, left metatarsal I and some fragmentary elements.

Bonitasauria salgadoi (modified from GALLINA & APESTEGUIA, 2011), Holotype: MPCA 300.

Referred material:

MACN-PV RN 1061: Complete braincase, incomplete anterior cervical vertebra, left radius, left ulna, left femur, left tibia, calcaneous, metatarsal III, a few incomplete chevrons, and some fragmentary indeterminate elements.