title: Morphology, paleontology, and placental mammal phylogeny.
authors.affiliation: Department of Zoology, University of Cambridge, Downing Street, UK.
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Asher
authors.forename: Jonathan H
authors.initials: JH
authors.lastname: Geisler
authors.forename: Marcelo R
authors.initials: MR
authors.lastname: Sánchez-Villagra
mesh_terms: D000818:Animals; D053476:Extinction, Biological; D008322:Mammals / Q000033:anatomy & histology* / Q000235:genetics*; D010163:Paleontology; D010802:Phylogeny; D013997:Time Factors