title: Chronometers and units in early archaeology and paleontology.
authors.forename: R L
authors.initials: RL
authors.lastname: Lyman
authors.forename: M J
authors.initials: MJ
authors.lastname: O'Brien
mesh_terms: D001106:Archaeology / Q000266:history / Q000295:instrumentation / Q000379:methods / Q000592:standards / Q000639:trends; D005075:Biological Evolution; D002910:Chronology as Topic; D053476:Extinction, Biological; D005580:Fossils; D005844:Geology / Q000266:history / Q000295:instrumentation / Q000379:methods / Q000592:standards / Q000639:trends; D049672:History, 19th Century; D049673:History, 20th Century; D010163:Paleontology / Q000266:history / Q000295:instrumentation / Q000379:methods / Q000592:standards / Q000639:trends