Walcott, C.D., 1898, Fossil medusae: U.S. Geological Survey Monograph 30, 201 p. Authors Walcott, C.D. Publication Date 1898 Citation U.S. Geological Survey Monograph 30, 201 p. State AZ Province CP County CN Placenames Marble Canyon Keywords Paleontology Invertebrate Proterozoic More Keywords Paleontology, Invertebrate, Proterozoic, AzGeoBib RefNum 10732
