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Shumard B.F., Swallow G.C. (1858). Descriptions of new fossils from the Coal Measures of Missouri and Kansas. Transactions of the Academy of Science of St. Louis. 1: 198–227.
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Shumard B.F., Swallow G.C.
1858
Descriptions of new fossils from the Coal Measures of Missouri and Kansas
Transactions of the Academy of Science of St. Louis
1: 198–227
Publication
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