... Spizaetus willetti Howard , from Smith Creek Cave , Nevada ( Quaternary ) , which is also a distal portion of the tarsometatarsus . The specimen from the Little Hatchet Mountains agrees with S. willetti in all char- acters noted as ...
... Spizaetus , Stephanoaetus , Polemaetus and Urotriorchis . The former five genera of large tropical eagles are ... willetti Howard , 1935 from Nevada , Spizaetus tanneri Martin , 1971 from Nebraska , and Neogyps errans Miller , 1916 ...
... ( Spizaetus willetti ) , a teratorn ( Teratornis incredibilis ) ( Howard 1935 , 1952 ) , and a mountain goat ( Oream- nos harringtoni ) ( Stock 1936 ) . The Mount Moriah Occupation at Smith Creek Cave Though there had been earlier small ...