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Temporal range: Late Oligocene - Early Miocene
Paraphysornis brasiliensis 1.jpg
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Cariamiformes
Family: Phorusrhacidae
Subfamily: Brontornithinae
Genus: Paraphysornis
Species: P. brasiliensis
Binomial name
Paraphysornis brasiliensis
Alvarenga, 1982

Paraphysornis is an extinct genus of giant flightless predatory birds of the family Phorusrhacidae or "terror birds" within the subfamily Brontornithinae that lived in Brazil. Its length was about 2 meter and the skull had a length of 60 centimeter. The only known species is Paraphysornis brasiliensis. It lived 23 million years ago.


  • Alvarenga, H.M.F. (1982) Uma gigantesca ave fóssil do cenozóico brasileiro: Physornis brasiliensis sp. n. Anais da Academia Brasileira de Ciências 54(4):697-712.
  • Alvarenga, H.M.F. & Höfling, E. (2003) Systematic revision of the Phorusrhacidae (Aves: Ralliformes). Pap. Avulsos Zool. (São Paulo) 43(4).