All three are approximately the same age, dating to the Campanian (84–71 mya) or more likely the Maastrichtian (71–66 mya), but the La Colonia Formation is perhaps a little younger.
Alle tre er omkring samme alder, dateret til Campanium (84–71 mya) eller mere sandsynligt Maastrichtium (71–66 mya), men La Colonia-formationen er muligvis lidt yngre.