Não informado. (1927). Journal of Paleontology. Society of Economic Paleontologists and Mineralogists.
Citace podle Chicago (17th ed.)Não informado. Journal of Paleontology. Tulsa, Okla: Society of Economic Paleontologists and Mineralogists, 1927.
Citace podle MLA (8th ed.)Não informado. Journal of Paleontology. Society of Economic Paleontologists and Mineralogists, 1927.
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