Genus: Nopcsaspondylus APESTEGUIA, 2007
Etymology: Nopcsa, referring the researcher that first studied the material, and Greek, sondylus, "vertebra."
Species: alacronensis APESTEGUIA, 2007
Etymology: Referring to Barda Alarcon, Neuquen Province, Patagonia, Argentina, the original locality where it was collected by the end of the 19th century.
Locality: Barda Alacon, NE from Picun Leufu Town, Neuquen Province, Patagonia, Argentina.
Horizon: Lower section of the Candeleros Formation.
Age: Coniacian Stage, Lower Senonian Subepoch, Lower Gulf Epoch, Late Cretaceous.
Material: Fragmentary dorsal vertebra.