Cobban, William Aubrey 1916-2015
New and little-known ammonites from the upper cretaceous (Cenomanian and Turonian) of the Western Interior of the United States / by William A. Cobban. -- Washington : United States Government Printing Office, 1971 - 24 p., [18] h. de lam. -- (Geological Survey Professional Paper ; 699).
Amonites
Cretácico
Estados Unidos
564.53"6153"
New and little-known ammonites from the upper cretaceous (Cenomanian and Turonian) of the Western Interior of the United States / by William A. Cobban. -- Washington : United States Government Printing Office, 1971 - 24 p., [18] h. de lam. -- (Geological Survey Professional Paper ; 699).
Amonites
Cretácico
Estados Unidos
564.53"6153"