title: Climbing life's tree.
authors.affiliation: Department of Earth Sciences, Uppsala University, Norbyvägen 22, Uppsala SE-752 36, Sweden.
authors.forename: G
authors.initials: G
authors.lastname: Budd
mesh_terms: D000489:Alligators and Crocodiles / Q000145:classification; D000818:Animals; D001717:Birds / Q000145:classification; D005580:Fossils; D010641:Phenotype; D010802:Phylogeny