title: Fossils challenge DNA in the dating game.
authors.forename: John
authors.initials: J
authors.lastname: Whitfield
mesh_terms: D000818:Animals; D004247:DNA / Q000032:analysis / Q000235:genetics; D025061:Dinosaurs; D053476:Extinction, Biological; D005580:Fossils; D049690:History, Ancient; D008322:Mammals; D008967:Molecular Biology / Q000379:methods*; D010163:Paleontology / Q000379:methods*; D010802:Phylogeny; D013997:Time Factors
chemical_list: D004247:DNA