*Phylum Mollusca
Foot
Visceral mass
Mantle
Radula
Phylum Echinodermata
Water vascular system
Tube feet
Phylum Chordata
Notochord
Dorsal hollow nerve cord
Pharyngeal gill slits
Postanal tail
Subphylum Urochordata
Subphylum Cephalochordata
Subphylum Vertebrata
Class Agnatha
Class Chondrichthyes
Class Osteichthyes
Class Amphibia
Class Reptilia
Ectotherm
Endotherm
Class Aves
Class Mammalia