Reptilia - Sphenisciformes - Spheniscidae

Full reference: F. Ameghino. 1905. Enumeracion de los Impennes Fosiles de Patagonia y de la Isla Seymour. Anales del Museo Nacional de Buenos Aires 6:97-167

Parent taxon: Spheniscidae according to G. G. Simpson 1972

Sister taxa: Anthropodyptes, Anthropornis, Archaeospheniscus, Dege, Delphinornis, Duntroonornis, Eretiscus, Eudyptes, Eudyptula, Inguza, Korora, Madrynornis, Marambiornis, Marplesornis, Megadyptes, Mesetaornis, Nucleornis, Pachydyptes, Palaeeudyptes, Palaeeudyptinae, Palaeospheniscinae, Palaeospheniscus, Paraptenodytes, Paraptenodytinae, Platydyptes, Pseudaptenodytes, Pygoscelis, Spheniscinae, Spheniscus, Tereingaornis, Tonniornis, Wimanornis

Subtaxa: Arthrodytes grandis

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Type: Paraptenodytes grandis

Ecology: ground dwelling carnivore