title: Reply to Butterfield on stem-group "worms": fossil lophotrochozoans in the Burgess Shale.
authors.forename: Jean-Bernard
authors.initials: JB
authors.lastname: Caron
authors.forename: Amélie
authors.initials: A
authors.lastname: Scheltema
authors.forename: Christoffer
authors.initials: C
authors.lastname: Schander
authors.forename: David
authors.initials: D
authors.lastname: Rudkin
mesh_terms: D000818:Animals; D005580:Fossils; D006376:Helminths / Q000145:classification / Q000235:genetics; D010802:Phylogeny