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.