http://thesaurus.bhlscielo.org/vocab/pthttp://thesaurus.bhlscielo.org/vocab/pt?tema=1556Craniata http://thesaurus.bhlscielo.org/vocab/pt?tema=1556 Chordata BT http://thesaurus.bhlscielo.org/vocab/pt?tema=1556 Vertebrata NT http://thesaurus.bhlscielo.org/vocab/pt?tema=1556 Agnatha NT