Glaessner, M.F., 1969, Trace fossils from the Precambrian and basal Cambrian: Lethaia, v. 2, p. 369-393. Authors Glaessner, M.F. Publication Date 1969 Citation Lethaia, v. 2, p. 369-393. State AZ Province CP County CN MO Keywords Paleontology Proterozoic Cambrian More Keywords Paleontology, Proterozoic, Cambrian, AzGeoBib RefNum 3657