title: Zoology: A New Mouth for Amphioxus.
abstract: Deuterostomes - a key subdivision of animals - are characterized by the mouth developing anteriorly as a rupture between the outer epithelium and the foregut wall. A new study of amphioxus challenges this view and proposes separate evolutionary origins of deuterostome oral openings.
authors.affiliation: Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Prague, Czech Republic. Electronic address: soukup@img.cas.cz.
authors.forename: Vladimir
authors.initials: V
authors.lastname: Soukup
authors.affiliation: Institute of Molecular Genetics, Academy of Sciences of the Czech Republic, Prague, Czech Republic.
authors.forename: Zbynek
authors.initials: Z
authors.lastname: Kozmik
mesh_terms: D000818:Animals; D005075:Biological Evolution; D064175:Lancelets / Q000033:anatomy & histology* / Q000235:genetics / Q000254:growth & development*; D009055:Mouth / Q000033:anatomy & histology* / Q000254:growth & development*