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  1. Diplocaulus : a study in growth and variation / Everett Claire Olson --
    By: Olson, Everett Claire, - Ross, Lillian A. - Roy, Sharat Kumar,
    Publication info: [Chicago] :Chicago Natural History Museum Press ,1951.
    Contributed by: University of Illinois Urbana Champaign
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  2. The family Caseidae / [by] Everett C. Olson -- [Edited by Edward G. Nash, Patricia M. Williams]
    By: Olson, Everett Claire, - Nash, Edward G. - Williams, Patricia M.
    Publication info: [Chicago]Field Museum Press ,1968.
    Contributed by: University of Illinois Urbana Champaign
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  3. The family Diadectidae and its bearing on the classification of reptiles / Everett Claire Olson --
    By: Olson, Everett Claire, - Ross, Lillian A. - Roy, Sharat Kumar,
    Publication info: [Chicago]:Chicago Natural History Musem Press ,1947.
    Contributed by: University of Illinois Urbana Champaign
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  4. Fauna of the upper Vale and Choza : 6, Diplocaulus / Everett Claire Olson --
    By: Olson, Everett Claire,
    Publication info: Chicago :Chicago Natural History Museum,1952.
    Contributed by: Field Museum Library
    BHL Collections: Field Museum Library
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  5. Fauna of the Vale and Choza : Trimerorhachis : including a revision of prevale species / Everett Claire Olson -- 10.
    By: Olson, Everett Claire,
    Publication info: Chicago :Chicago Natural History Museum,1955.
    Contributed by: University of Illinois Urbana Champaign
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  6. Fauna of the Vale and Choza : Captorhinomorpha / Everett Claire Olson -- 9.
    By: Olson, Everett Claire,
    Publication info: Chicago :Chicago Natural History Museum,1954.
    Contributed by: Field Museum Library
    BHL Collections: Field Museum Library
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  7. Fauna of the Vale and Choza : Diadectes, Xenacanthus, and specimens of uncertain affinities / Everett Claire Olson -- 13.
    By: Olson, Everett Claire,
    Publication info: Chicago :Chicago Natural History Museum,1956.
    Contributed by: Field Museum Library
    BHL Collections: Field Museum Library
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  8. Fauna of the Vale and Choza : Lysorophus : Vale and Choza ; Diplocaulus, Cacops and Eryopidae : Choza / Everett Claire Olson -- 11.
    By: Olson, Everett Claire,
    Publication info: Chicago :Chicago Natural History Museum,1956.
    Contributed by: Field Museum Library
    BHL Collections: Field Museum Library
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  9. Fauna of the Vale and Choza : a new Trematopsid amphibian from the Vale formation / Everett Claire Olson -- 12.
    By: Olson, Everett Claire,
    Publication info: Chicago :Chicago Natural History Museum,1956.
    Contributed by: Field Museum Library
    BHL Collections: Field Museum Library
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  10. Fauna of the Vale and Choza : Pelycosauria : Dimetrodon / Everett Claire Olson -- 8.
    By: Olson, Everett Claire,
    Publication info: Chicago :Chicago Natural History Museum,1954.
    Contributed by: Field Museum Library
    BHL Collections: Field Museum Library
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  11. Fauna of the Vale and Choza : Pelycosauria : family Caseidae / Everett Claire Olson -- 7.
    By: Olson, Everett Claire,
    Publication info: Chicago :Chicago Natural History Museum,1954.
    Contributed by: Field Museum Library
    BHL Collections: Field Museum Library
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  12. Fauna of the Vale and Choza : summary, review, and integration of the geology and the faunas / Everett Claire Olson -- 14.
    By: Olson, Everett Claire,
    Publication info: Chicago :Chicago Natural History Museum,1958.
    Contributed by: University of Illinois Urbana Champaign
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  13. Fauna of upper Vale and Choza: Everett Claire Olson -- 1-5 /
    By: Olson, Everett Claire,
    Publication info: [Chicago] :Chicago Natural History Museum,1951
    Contributed by: Field Museum Library
    BHL Collections: Field Museum Library
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  14. New and little known genera and species of vertebrates from the Lower Permian of Oklahoma / [by] Everett C. Olson -- [Patricia M. Williams, editor]
    By: Olson, Everett Claire, - Williams, Patricia M.
    Publication info: [Chicago] :Field Museum Press ,1970.
    Contributed by: University of Illinois Urbana Champaign
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  15. Parallelism in the evolution of the Permian reptilian faunas of the Old and New Worlds / Everett C. Olson.
    By: Olson, Everett Claire,
    Publication info: Chicago :Natural History Museum,1955.
    Contributed by: University of Illinois Urbana Champaign
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  16. Permo-Carboniferous fresh water burrows / Everett C. Olson -- and Kathryn Bolles --.
    By: Olson, Everett Claire, - Bolles, Kathryn,
    Publication info: Chicago :Field Museum of Natural History,1975.
    Contributed by: University of Illinois Urbana Champaign
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  17. Relationships of Diadectes / Everett Claire Olson --
    By: Olson, Everett Claire,
    Publication info: [Chicago] :Chicago Natural History Museum,1966.
    Contributed by: University of Illinois Urbana Champaign
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  18. The temporal region of the Permian reptile Diadectes / Everett Claire Olson --
    By: Olson, Everett Claire,
    Publication info: [Chicago] :Chicago Natural History Museum,1950.
    Contributed by: Field Museum Library
    BHL Collections: Field Museum Library
    View Book