Cathartornis ("Cathartes Bird") is an ancient bird of the Teratornithidae family. The genus contains a single species, Cathartornis gracilis, known from only two tarsometatarsi, one complete and one containing only the distal end, recovered from the Late Pleistocene La Brea Tar Pits in Southern California. Since then, no other fossils have officially been referred to the taxon, though some fossils assigned to Teratornis could be from Cathartornis and unpublished remains have been mentioned.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).