'bird'
Late Cretaceous, 75-81 million years ago
Dinosauria, Saurischia, Theropoda, Neotheropoda, Tetanurae, Avetheropoda, Coelurosauria, Tyrannoraptora, Maniraptoriformes, Maniraptora, Alvarezsauridae
Chiappe, Norell and Clark (1998)