SUBPHYLUM UROCHORDATA- "TUNICATES"
Sea squirt
SUBPHYLUM CEPHALOCHORDATA - "LANCELETS"
Amphioxus
SUBPHYLUM VERTEBRATA- "VERTEBRATES"
Class AGNATHA- "JAWLESS CREATURES"
Lamphrey, hagfishes
CLASS CHONDRICHTHYES- "CARTILAGINOUS FISH"
Shark pup
CLASS OSTEICHTHYES- "BONY FISH"
Perch
CLASS AMPHIBIA- "AMPHIBIANS"
Frog
CLASS REPTILIA- "REPTILES"
snakes, iguana, alligator, tortoise
CLASS AVES- "BIRDS"
chicken, parrot, heron, sea gull
CLASS MAMMALIA
mouse, bat