Cobban, William A.
Some acanthoceratid ammonites from Upper Cenomanian (Upper Cretaceous) rocks of Wyoming - Washington, D.C. U.S. Geological Survey 1988 - pp. 1-16
AMMONOIDEA
CRETACEO
ESTADOS UNIDOS
Some acanthoceratid ammonites from Upper Cenomanian (Upper Cretaceous) rocks of Wyoming - Washington, D.C. U.S. Geological Survey 1988 - pp. 1-16
AMMONOIDEA
CRETACEO
ESTADOS UNIDOS