Species: cazaui SALGADO & BONAPARTE,
1991
Etymology: In honor of Dr. Luis B. Cazau, for his interest in the palaeontology
of the La Amarga Formation.
= Amargasaurus groeberi BONAPARTE, 1984 (nomen nudum)
= Amargasaurus cazaui BONAPARTE, 1990 (nomen nudum)
Holotype: MACN-N 15
Locality: 70 km south of Zapala City, approximately 2.5 km southeast of the crossing between Arroyo La Amarga and National Road 40, Department Picun Leufu, Neuquen Province, Patagonia, Argentina.
Horizon: La Amarga Formation.
Biostratigraphy:
Age: Amargan Tetrapod Assemblage, Barremian Stage, Lower Gallic Subepoch, Lower Early Cretaceous Epoch-Aptian Stage, Middle Gallic Subepoch, Upper Early Cretaceous Epoch, Early Cretaceous.
Material: Cranium, vertebral column from atlas-axis to sacrum, ilium, humerus, radius and ulna, femur, tibia fibula and astragalus.
Amargasaurus cazaui (modified from SALGADO & BONAPARTE, 1991, Holotype: MACN-N 15.
Referred material:
SALAGADO & BONAPARTE, 2007
PV-6126-MOZ: A posterior cervical vertebra.