The fauna of the phosphate beds of the Park City formation in Idaho, Wyoming, and Utah - Girty, George Herbert, 1869-1939. (Washington, Govt. print. off., 1910)
Issued also as House doc. no. 996, 61st Cong.
Keywords: Paleontology -- Idaho; Paleontology -- Wyoming; Paleontology -- Utah; Paleontology -- Carboniferous; Invertebrates, Fossil