PaleoDB taxon number: 166915
Full reference: H. Howard. 1966. Additional avian records form the Miocene of Sharktooth Hill, California. Contributions in Science 114:1-11
Type specimen: LACM 7219, a limb element (proximal left ulna). Its type locality is Sharktooth Hill Bonebed, which is in a Langhian terrestrial siltstone in the Temblor Formation of California.
Ecology: ground dwelling carnivore