title: Dating the origin of dinosaurs.
authors.affiliation: Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560 suesh@si.edu.
authors.forename: Hans-Dieter
authors.initials: HD
authors.lastname: Sues
mesh_terms: D000818:Animals; D005075:Biological Evolution; D025061:Dinosaurs / Q000033:anatomy & histology*