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Album caption: Unio and Vetulonaia. Mollusca Fauna of the Morrison Formation, Colorado and Wyoming. 1945. Published in U. S. Geological Survey. Professional paper 233-B. 1952.
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Album caption: Unio and Hadrodon. Mollusca Fauna of the Morrison Formation, Colorado and Wyoming. 1945. Published in U. S. Geological Survey. Professional paper 233-B. 1952.
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Album caption: Upper Cretaceous nonmarine mollusks from Utah and Colorado. n. d. Published in U. S. Geological Survey. Professional paper 254-B. 1954.
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Album caption: Upper Cretaceous nonmaringe mollusks from Utah and Colorado. n. d. Published in U. S. Geologocal Survey. Professional paper 254-B. 1954.
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Album caption: Unio and Hadrodon. Colorado and Wyoming. 1945. Published in U.S. Geological Survey. Professional paper 233-B. 1952.
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Album caption: Upper Cretaceous nonmarine Mollusks from Wyoming. n. d. Published in U.S.Geological Survey. Professional paper 254-B. 1954.
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Album caption: Gastropoda. Mollusca fauna of the Morrison Formation. Colorado and Wyoming. 1945. Published in U. S. Geological Survey. Professional paper 233-B. 1952.


    map background search result map search result map Upper Cretaceous nonmarine Mollusks from Wyoming. n. d. Upper Cretaceous nonmaringe mollusks from Utah and Colorado. n. d. Upper Cretaceous nonmarine mollusks from Utah and Colorado. n. d. Unio and Vetulonaia. Colorado and Wyoming. 1945. Unio and Hadrodon. Colorado and Wyoming. 1945. Unio and Hadrodon.  Colorado and Wyoming. 1945. Gastropoda.  Colorado and Wyoming. 1945. Upper Cretaceous nonmaringe mollusks from Utah and Colorado. n. d. Upper Cretaceous nonmarine mollusks from Utah and Colorado. n. d. Upper Cretaceous nonmarine Mollusks from Wyoming. n. d. Unio and Vetulonaia. Colorado and Wyoming. 1945. Unio and Hadrodon. Colorado and Wyoming. 1945. Unio and Hadrodon.  Colorado and Wyoming. 1945. Gastropoda.  Colorado and Wyoming. 1945.