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Books by William a. Cobban

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BULLETIN 1788: THE UPPER CRETACEOUS AMMONITE 'WATINOCERAS' WARREN IN THE WESTERN INTERIOR OF THE UNITED STATES. (SIGNED).
🇺🇸 United States
BULLETIN 1788: THE UPPER CRETACEOUS AMMONITE 'WATINOCE…
By: William A. Cobban
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BULLETIN 1641-A: THE LOWER CRETACEOUS AMMONITE 'SCHLOENBACHIA LEONENSIS' CONRAD VAR. 'EQUDISTANS' CRAGIN.
🇺🇸 United States
BULLETIN 1641-A: THE LOWER CRETACEOUS AMMONITE 'SCHLOE…
By: William A. Cobban
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Some Acanthoceratid Ammonites from Upper Cenomanian (Upper Cretaceous) Rocks of Wyoming: Usgs Professional Paper 1353
🇺🇸 United States
Some Acanthoceratid Ammonites from Upper Cenomanian (Upper …
By: William a. Cobban
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