What is the difference between Lizards and Snakes ?

Lizards:

1. Single temporal fossa is present.

2. Tympanum is present.

3. Limbs are present except ophisaurus.

4. Sternum present.

5. Eyelids are movable, e.g. Calotes, Heloderma, Phrynosoma.

Snakes:

1. Temporal fossa is absent.

2. Tympanum is absent.

3. Limbs are absent.

4. Sternum absent.

5. Eyelids are immovable, e.g.Python, Naja, Viper.