Species: neguyelap GONZALEZ RIGA, 2003
Etymology: From neguy, ‘first’, and yelap, ‘beast’, Huarpes indigenous terms (Millcayac language, Marquez Miranda, 1943) referring to the first species of dinosaur discovered in Mendoza Province. The ending of the term yelap has not been modified, since it is not a latin or latinized word (Art. 31.2.3. Comision Internacional de Nomenclatura Zoologica, 2000)
Holotype: IANIGLA-PV 065/1-23
Locality: South of Cerro Guillermo, Malargue Department, Mendoza Province, Argentina.
Horizon: Levels provisionally assigned to the Upper section of the Rio Neuquen Formation .(or Rio Neuquen Subgroup according to Leanza adn Hugo, 2001).
Age: Late Turonian Stage, Uppermost Gallic Subepoch-Coniacian Stage, Lower Senonian Subepoch, Lower Gulf Epoch, Late Cretaceous.
IANIGLA-PV 080/1-2, 081/1-2: 4 osteoderms.
Note: Possibly two individuals.