II. Jawless Fishes - Agnathans
A. Characteristics
1. Teeth but no jaws
2. Eel-like
3. Median fins but no paired appendages
4. Fibrous and cartilaginous skeleton
notochord persistent but no vertebrae
5. Two chambered heart
6. No stomach; spiral valve in intestine
Previous slide
Next slide
Back to first slide
View graphic version