a. Amphibia | i. Air bladder |
b. Mammals | ii. Cartilaginous notochord |
c.Chondrichthyes | iii. Mammary glands |
d. Osteichthyes | iv. Pneumatic bones |
e.Cyclostomata | v. Dual habitat |
f. Aves | vi. Sucking and circular mouth without jaws |
a. Amphibia | v. Dual habitat |
b. Mammals | iii. Mammary glands |
c.Chondrichthyes | ii. Cartilaginous notochord |
d. Osteichthyes | i. Air bladder |
e.Cyclostomata | vi. Sucking and circular mouth without jaws |
f. Aves | iv. Pneumatic bones |