Synonyms: Astrapotherioidea Ameghino 1894, Astrapotheroidea Ameghino 1894
Full reference: R. Lydekker. 1894. Contributions to a knowledge of the Fossil Vertebrates of Argentina. III - A study of extinct argentine ungulates. Anales del Museo de La Plata. Paleontología Argentina 2(3):1-86
Parent taxon: Sudamericungulata according to L. S. Avilla and D. Mothé 2021
See also Ameghino 1894, Carroll 1988, Gregory 1910, McKenna 1975, McKenna and Bell 1997 and Simpson 1934
Sister taxa: Notoungulata, Pyrotheria, Xenungulata
Subtaxa: Adelotherium Adrastotherium Antarctodon Astrapotheriidae Blastoconus Blastoconus robertsoni Entocasmus Eoastrapostylopidae Grypolophodon Grypolophodon morenoi Grypolophodon tuberculosis Notorhinus Notorhinus haroldi Trigonostylopidae
Ecology: scansorial herbivore
Distribution:
• Quaternary of Brazil (2 collections)
• Huayquerian of Brazil (1)
• Miocene to Pliocene of Brazil (1)
• Miocene of Argentina (33), Bolivia (3), Brazil (2), Chile (8), Colombia (45), Ecuador (1), Peru (6), Venezuela (2)
• Deseadan of Argentina (9), Bolivia (2), Brazil (1), Uruguay (1)
• Oligocene of Argentina (1), Chile (1), Colombia (1), Peru (4)
• Eocene to Oligocene of Peru (1)
• Eocene to Miocene of Argentina (1)
• Eocene of Antarctica (4), Argentina (39), Brazil (3)
• Paleocene of Argentina (4)
Total: 176 collections including 251 occurrences