Difference between Agnatha and Gnathostomata are given below:
Agnatha
1. Primitive vertebrates and all aquatic.
2. Jaws are absent.
ADVERTISEMENTS:
3. Paired appendages absent.
4. Mouth anterovertebral, circular, funnel like.
5. Head with the lateral eyes.
Gnathostomata
ADVERTISEMENTS:
1. They may be aquatic, terrestrial or aerial.
2. Their jaws are present in the mouth.
3. Presence of paired fines.