Genus: Katepensaurus IBIRICU, CASAL, MARTINEZ, LAMANNA, LUNA & SALGADO,
Etymology: Generic name from Tehuelche (the indigenous people of central Patagonia), katepenk, "hole": in reference to one of the most distinctive features of the new taxon, the fenestrae in the dorsal vertebral transverse porcesses; and Greek, sauros, "lizard."
Speices: goicoecheai IBIRICU, CASAL, MARTINEZ, LAMANNA, LUNA & SALGADO,
Etymology: In honor of Mr. Alejandro Goicoecheai, owner of the Estancia Laguna Palacios where the specimen was found, who has allowed the UNPSJB team and thier collabrators in conduct field research fhtere for nearly two decades.
Holotype: UNPSJB-PV 1007
Locality: '2005 Quarry', 44°54'23.82"S, 69°22'43.67"W, Estancia Laguna Palacios, south-central Chubit Province, central Patagonia, Argentina.
Horizon: Upper part of the Lower Member, Bajo Barreal Formation, Chubut Group.
Age: Cenomanian Stage, Uppermiddle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous- Turonian Stage, Uppermost Gallic Subepoch, Lower Senonian Subepoch, Lower Gulf Epoch, Late Cretaceous.
Breakdown as follows:
UNPSJB-PV 1007/1, 2, 3: 3 anterior to middle cervical vertebrae.
UNPSJB-PV 1007/4, 5, 6: 3 middle to posterior dorsal vertebrae.
UNPSJB-PV 1007/7, 8: 2 anterior caudal vertebrae.
UNPSJB-PV 1007/9/10: 2 indeterminate elements.