Middle Paleocene - Late Pliocene | image = Paraphysornis BW-2r.jpg | image_width = 240px | image_caption = Paraphysornis. | regnum = Animalia | phylum = Chordata | classis = Aves | ordo = Cariamae | familia = Phorusrhacidae | familia_authority = Ameghino, 1889 | synonyms = see text }} Phorusrhacids ("Rag-Bearers"), or terror birds, were a family of large carnivorous flightless birds that were the dominant predators in South America during the Cenozoic, 62–2 million years (Ma) ago. They wer… (More on Phorusrhacidae)