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A new fauna from the Colorado group of southern Montana
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Cephalopods from the lower part of the Cody shale of Oregon Basin, Wyoming
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Exogyra olisiponensis Sharpe and Exogyra costata Say in the Western Interior
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Shorter contributions to general geology, 1926. W.C. Mendenhall, chief geologist.
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Shorter contributions to general geology, 1927. W.C. Mendenhall, chief geologist.
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Some American Jurassic ammonites of the genera quenstedticeras, cardioceras, and amoeboceras, family cardioceratidae
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Studies of the Mowry shale (Cretaceous) and contemporary formations in the United States and Canada
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The Helderberg limestone of central Pennsylvania
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The Upper Cretaceous ammonite genus Barroisiceras in the United States
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The fauna of the so-called Dakota formation of northern central Colorado and its equivalent in southeastern Wyoming
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The scaphites, an upper cretaceous ammonite group
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Upper Cretaceous and Tertiary formations of the western part of the San Juan Basin, Colorado and New Mexico
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Upper cretaceous ammonites from Haiti
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