Bathornithidae Paleopsilopterus Idiornithidae Paracrax Eutreptornis Patagorhacos Itaboravis Procariama Elaphrocnemus Strigogyps Eleutherornis Chunga (bird) Patagornis Llallawavis Bathornis Physornis Red-legged seriema Paraphysornis Mesembriornis Psilopterus Andrewsornis Lavocatavis Andalgalornis List of fossil bird genera Devincenzia Kelenken Titanis Phorusrhacidae Phorusrhacos 2007 in paleontology