| Registros del 1 al 3 de 3 encontrados |
1.- Ammonites from the upper part of the Pierre Shale and Fox Hills Formation of Colorado
Landman, Neil H.; Cobban, William A.
New York: American Museum of Natural History, 2003
American Museum Novitates
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2.- The heteromorph Ammonite Didymoceras cochleatum (Meek and Hayden, 1858), from the Pierre Shale of South Dakota and Wyoming
Kennedy, William James; Cobban, William A.; Landman, Neil H.
New York: American Museum of Natural History, 1999
American Museum Novitates
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3.- The Maastrichtian Ammonites Coahuilites sheltoni Bose, 1928, and Sphenodiscus pleurisepta (Conrad, 1857), from the Uppermost Pierre Shale and Basal Fox Hills Formation of Colorado and Wyoming
Kennedy, William James; Landman, Neil H.; Cobban, William A.
New York: American Museum of Natural History, 1996
American Museum Novitates
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