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Zinsmeister, W. J. (1977). Note on a new occurrence of the Southern Hemisphere aporrhaid genus Struthioptera Finlay & Marwick on Seymour Island, Antarctica. Journal of Paleontology. 51(2): 399-404.
Zinsmeister, W. J. (1977). Note on a new occurrence of the Southern Hemisphere aporrhaid genus Struthioptera Finlay & Marwick on Seymour Island, Antarctica. Journal of Paleontology. 51(2): 399-404.
