Worthen, A. H. (1884). Descriptions of two new species of Crustacea, fifty-one species of Mollusca, and three species of crinoids, from the Carboniferous Formation of Illinois and adjacent states. Bulletin of the Illinois State Museum of Natural History. 2, 1-27.
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Worthen, A. H.
1884
Descriptions of two new species of Crustacea, fifty-one species of Mollusca, and three species of crinoids, from the Carboniferous Formation of Illinois and adjacent states
Bulletin of the Illinois State Museum of Natural History