differentiate between agnatha and gnathostomata

Difference between Agnatha and Gnathostomata
Agnatha :
1. Jaws are absent.
2. Paired appendages absent.
3. Notochord persistent.
4. Single median nostril present.
Gnathostomata :?
1.Jaws cure present.
2.Paired appendages present.
3.Notochord replaced by vertebral column.
4.Nostrils are paired.