Physornis

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Physornis
Temporal range: Middle - Late Oligocene
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Cariamiformes
Family: Phorusrhacidae
Genus: Physornis
Species: P. fortis
Binomial name
Physornis fortis
Ameghino, 1895

Physornis fortis is an extinct species of giant flightless predatory birds of the family Phorusrhacidae or "terror birds", within the subfamily Brontornithinae, that lived in Argentina. It lived from 28 to 23 million years ago, during the Oligocene.

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