1. Crocodylus is commonly called mugger or marsh crocodile.
2. Body is stout , 4-5 m long and covered with exoskeleton of horny thick epidermal scales over dermal bony plates.
3. The general colour of the upper parts is dark olive brown with black spots.
4. The head is triangular and rough at the top , snout is broad and provided with large wide mouth , nostrils at the tip of snout , eyes with eyelids and ear openings protected by a movable flap of skin.
5. The tail is long , laterally compressed and powerful.
6. Limbs are pentadactyle with five fingers and four toes. The fingers are webbed at the base and the outer toes are broadly webbed.
7. Mandibular symphysis is short , extending only to the level of 4 th tooth.
8. Vertebrae are procoelous.
9. Heart is four chambered. Urinary bladder absent.
Source:
1. Practical Zoology Vertebrates by S.S.Lal. 2. A Manual of Practical Zoology Chordates by Dr. P.S. Verma.
