Genus: Kaikaifilusaurus SIMON & KELLNER, 2005
Etymology: From the divinity Kaikai filu of the Mapuce culture (indigenous
inhabitants of southern Argentina and Chile), and Greek, sauros, "lizard."
Species: calvoi SIMON & KELLNER,
2005
Etymology: In honor of the paleontologist Jorge Orlando Calvo (Comahue University,
Neuquen), who greatly contributed to the development of vertebrate paleontology
in the Neuquen Province.
Holotype: MPCHv 4
Locality: Araceli site, located close to the national route 237, near the El Chocon Village, about 80km southeast of the Neuquen City, Neuquen Province, Patagonia, Argentina.
Horizon: Candeleros Formation.
Biostratigraphy:
Age: Early Cenomanian Stage, Upper Gallic subepoch, Lowest Gulf Epoch, Late Early to Early Middle Cretaceous.
Material: Left lower jaw.
Paratype:
MPCHv 5: Right lower jaw lacking the symphyseal and posterior regions.
Note: MN 6767-V: Cast.
Referred material:
APESTEGUIA & NOVAS, 2003
Locality: "Al Buitreta" fossil quarry, Cerro Policia, Rio Negro Province, Argentina.
Horizon: Candeleros Formation.
Biostratigraphy:
Age: Early Cenomanian Stage, Upper Gallic subepoch, Lowest Gulf Epoch, Late Early to Early Middle Cretaceous.
Material:
MPCA 300: A juvenile incomplete skeleton.
MPCA 302: Postcranial isolated remains.
MPCA 303: A partially articulated adult skeleton.