title: Clarifying relatives and ancestors.
authors.forename: Walter
authors.initials: W
authors.lastname: Shearer
mesh_terms: D000818:Animals; D004606:Elephants / Q000145:classification*; D053476:Extinction, Biological; D005580:Fossils; D056665:Mammoths / Q000145:classification*; D056666:Mastodons / Q000145:classification*; D010802:Phylogeny