title: Substitution bias, weighted parsimony, and amniote phylogeny as inferred from 18S rRNA sequences.
authors.forename: C R
authors.initials: CR
authors.lastname: Marshall
mesh_terms: D000818:Animals; D001483:Base Sequence; D001717:Birds / Q000145:classification / Q000235:genetics; D005821:Genetic Techniques; D008322:Mammals / Q000145:classification / Q000235:genetics; D008969:Molecular Sequence Data; D010802:Phylogeny; D012337:RNA, Ribosomal, 18S / Q000235:genetics*
chemical_list: D012337:RNA, Ribosomal, 18S