Wm. F. E. Gurley

New genera and species of Echinodermata

S. Miller, Wm. F. E. Gurley, 1894 .

Description of some new genera and species of Echinodermata from the coal measures and subcarboniferous rocks of Indiana, Missouri, and Iowa

S. Miller, Wm. F. E. Gurley, 1890 .