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

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Some Middle Cenomanian (Upper Cretaceous) Acanthoceratid Ammonites from the w...

William Aubrey CobbanFirst published 19872 editions

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

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First publish date 19871 credited authorSearch language english

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William Aubrey Cobban
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Some Middle Cenomanian (Upper C...William Aubrey Cobban
SM
Some Middle Cenomanian (Upper Cretaceous) Acanthoceratid Ammonites from the western interior of the United States
William Aubrey Cobban | U.S. G.P.O, For sale by the Books and Open-File Reports Section, U.S. Geological Survey | 1987
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Some Middle Cenomanian (Upper C...William Aubrey Cobban
SM
Some Middle Cenomanian (Upper Cretaceous) Acanthoceratid Ammonites from the western interior of the United States
William Aubrey Cobban | U.S. Geological Survey | 1987