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  1. Die Echinodermenlarven der Deutschen Südpolar-Expedition 1901- 1903 / von Th. Mortensen.
    By: Mortensen, Th.
    Publication info: Berlin :G. Reimer,[1913?]
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  2. Echinoidea. Translated by Torben Lundbeck. Pt. I-II.
    By: Mortensen, Th.
    Publication info: Copenhagen,Printed by Bianco Luno,1903-1907.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  3. The Ophiuridae / by C. F. Lütken and Th. Mortensen.
    By: Lütken, Chr. Fr. - Mortensen, Th.
    Publication info: Cambridge :Printed for the Museum,1899.
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
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  4. Results of Dr. E. Mjöbergs Swedish scientific expeditions to Australia 1910-1913. by Th. Mortensen. XXI, Echinoidea /
    By: Mortensen, Th. - Mjöberg, Eric,
    Publication info: Stockholm :Almqvist & Wiksells,1918.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  5. Studies in the development of crinoids, by Th. Mortensen.
    By: Mortensen, Th.
    Publication info: Washington,Carnegie Institution of Washington,1920.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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