Some Middle Cenomanian (Upper Cretaceous) Acanthoceratid Ammonites from the western interior of the United States

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William Aubrey Cobban

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Some Middle Cenomanian (Upper Cretaceous) Acanthoceratid Ammon...William Aubrey Cobban

William Aubrey CobbanPublished 1987

See journals under US Geological survey. Prof. paper 1445.

Publisher	U.S. G.P.O, For sale by the Books and Open-File Reports Section, U.S. Geological Survey
Pages	28
Search language	english

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Some Middle Cenomanian (Upper Cretaceous) Acanthoceratid Ammonites from the western interior of the United States
William Aubrey Cobban | U.S. Geological Survey | 1987