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  1. 1
    Ferns from the Chinle Formation (Upper Triassic) in the Fort Wingate area, New Mexico revision of five late Triassic ferns and a review of previous paleobotanical investigations in the Triassic formations of the southwest

    Ferns from the Chinle Formation (Upper Triassic) in the Fort Wingate area, New Mexico revision of five late Triassic ferns and a review of previous paleobotanical investigations in... von Ash, Sidney R.

    Veröffentlicht 1969
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  2. 2
    History of nomenclature and stratigraphy of rocks adjacent to the Cretaceous-Tertiary boundary, western San Juan Basin, New Mexico

    History of nomenclature and stratigraphy of rocks adjacent to the Cretaceous-Tertiary boundary, western San Juan Basin, New Mexico von Baltz, Elmer H., Ash, Sidney R., Anderson, Roger Y.

    Veröffentlicht 1966
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  3. 3
    North American species of Tempskya and their stratigraphic significance a description of two new species of the Early Cretaceous tree fern Tempskya and a discussion of the characters and distribution of the other North American species

    North American species of Tempskya and their stratigraphic significance a description of two new species of the Early Cretaceous tree fern Tempskya and a discussion of the characte... von Ash, Sidney R., Read, Charles B., Zeller, Robert A.

    Veröffentlicht 1976
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