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Knight, J. B. (1947). Some new Cambrian bellerophont gastropods. Smithsonian Miscellaneous Collections. 106(17): 1−11, pls. 1−2.
Knight, J. B. (1947). Some new Cambrian bellerophont gastropods. Smithsonian Miscellaneous Collections. 106(17): 1−11, pls. 1−2.