The Maastrichtian ammonites Coahuilites sheltoni Böse, 1928, and Sphenodiscus pleurisepta (Conrad, 1857), from the uppermost Pierre shale and basal Fox Hills formation of Colorado and Wyoming. American Museum novitates ; no. 3186

Kennedy, W. J. (William James)Landman, Neil H.Cobban, William A., 1916-2015.2005-10-062005-10-061996http://hdl.handle.net/2246/365114 p. : ill. (some col.) ; 26 cm.Includes bibliographical references (p. 13-14).8968115 bytesapplication/pdfen-USQL1 .A436 no.3186 1996Coahuilites sheltoni.Sphenodiscus pleurisepta.Ammonoidea -- West (U.S.)Ammonoidea -- Mexico, Northern.Paleontology -- Cretaceous -- West (U.S.)Paleontology -- Cretaceous -- Mexico, Northern.Paleontology -- West (U.S.)Paleontology -- Mexico, Northern.The Maastrichtian ammonites Coahuilites sheltoni Böse, 1928, and Sphenodiscus pleurisepta (Conrad, 1857), from the uppermost Pierre shale and basal Fox Hills formation of Colorado and Wyoming. American Museum novitates ; no. 3186text