Infraorder Cariamides (bird)
Parent taxon: Cariamae according to B. C. Livezey and R. L. Zusi 2007
Sister taxa: Ameghinornithidae, Gradiornis, Idiornithidae, Itaboravis, Otides, Phororhacoidea, Phororhacosidae, Phorusrhacidae
Subtaxa: Cariamoidea
Ecology: ground dwelling carnivore
Distribution:
• Pliocene of Argentina (5 collections)
• Huayquerian of Argentina (1)
• Arikareean of United States (1: Wyoming)
• Oligocene of United States (6: South Dakota)
• Eocene of United States (6: Colorado, Nebraska, South Dakota, Utah, Wyoming)
Total: 19 collections including 21 occurrences