Animales Vertebrados e Invertebrados - Vertebrates and Invertebrates

   
 Fuente:
http://www.juntadeandalucia.es/averroes/ceip_san_rafael/Baelo%20claudia/CLASIFICACION/vertebrados_invertebrados.html
Source:

http://www.open.edu/openlearnworks/mod/oucontent/view.php?id=52680&extra=thumbnail_idp2971824