Miller, S.A. & Gurley, W.F.E. (1891). Description of some new genera and species of Echinodermata from the Coal Measures and Subcarboniferous rocks of Indiana, Missouri, and Iowa. Indiana Department of Geology and Natural Resources, 16th Annual Report: 327-373.
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Miller, S. A.; Gurley, W. F.
1891
Description of some new genera and species of Echinodermata from the Coal Measures and Subcarboniferous rocks of Indiana, Missouri, and Iowa
Indiana Department of Geology and Natural Resources