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  1. 1
    On Triassic species of the genera Zamites and Pterophyllum types of fronds belonging to the cycadophyta /

    On Triassic species of the genera Zamites and Pterophyllum types of fronds belonging to the cycadophyta / by Arber, E. A. Newell (Edward Alexander Newell), 1870-1918

    Published 1904
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  2. 2
    Contributions towards the history of Zamia gigas, Lindl. & Hutt

    Contributions towards the history of Zamia gigas, Lindl. & Hutt by Williamson, William Crawford, 1816-1895

    Published 1870
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  3. 3
    On fossil cycadean stems from the secondary rocks of Britain

    On fossil cycadean stems from the secondary rocks of Britain by Carruthers, William, 1830-1922

    Published 1870
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  4. 4
    On Psygmophyllum majus, sp. nov., from the lower carboniferous rocks of Newfoundland together with a revision of the genus and remarks on the affinities /

    On Psygmophyllum majus, sp. nov., from the lower carboniferous rocks of Newfoundland together with a revision of the genus and remarks on the affinities / by Arber, E. A. Newell (Edward Alexander Newell), 1870-1918

    Published 1904
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  5. 5
    Paleozoic origin of the cycads /

    Paleozoic origin of the cycads / by Mamay, Sergius H., 1920-

    Published 1976
    Government Document Book
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  6. 6
    Paleozoic origin of the cycads /

    Paleozoic origin of the cycads / by Mamay, Sergius H., 1920-

    Published 1976
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    Online Access
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  7. 7
    On the cuticles of some recent and fossil cycadean fronds

    On the cuticles of some recent and fossil cycadean fronds by Thomas, Hugh Hamshaw, 1895-1962

    Published 1913
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