Full reference: H. Howard. 1955. A new wading bird from the Eocene of Patagonia. American Museum Novitates 1710:1-25
Parent taxon: Neornithes according to J. F. Clements et al. 2017
See also del Hoyo et al. 2014, Howard 1972, Livezey and Zusi 2007, Mayr 2005, Sangster 2005 and Worthy and Nguyen 2020
Sister taxa: Aequornithes, Alectromorphae, Cariamiformes, Cathartiformes, Colymbomorphae, Coraciomorphae, Eurypygiformes, Galbuliformes, Leptosomiformes, Lonchodytes pterygius, Mesitornithiformes, Neognathae, Odontognathae, Otidiformes, Palaeognathae, Pelargomorphae, Picocoraciae, Pterocliformes
Subtaxa: Adelalopus Agnopterus Juncitarsidae Palaelodidae Phoenicopteridae Tiliornis
Ecology: ground dwelling carnivore
Distribution:
• Quaternary of Argentina (1 collection), the Congo-Kinshasa (1), Egypt (2), Madagascar (1), Mauritius (2), Mexico (3), Portugal (1), Puerto Rico (1), Reunion (1), South Africa (1), United States (8: California, Florida, Oregon), Venezuela (3)
• Blancan of United States (2: California, Florida)
• Pliocene of Australia (1), United States (1: North Carolina)
• Huayquerian of Argentina (2)
• Hemphillian of Mexico (1)
• Miocene of Argentina (1), Australia (1), the Czech Republic (3), France (1), Germany (1), Mexico (2), Moldova (1), New Zealand (2), Thailand (1), United States (9: California, Florida, Oregon, South Dakota)
• Oligocene of Australia (2), Belgium (1), Egypt (2), France (2), Kazakhstan (1)
• Eocene of Antarctica (1), France (1), Mongolia (1), United States (1: Virginia)
Total: 66 collections including 84 occurrences