1. Urochordates = Tunicates = Sea squirts Protochordates include (See figure 2-2 in text)

2. Underappreciated beauty of tunicates

3. Notochord Dorsal hollow nerve cord Pharynx with endostyle Muscular post anal tail Adhesive surface Larva “stands on its head” and attaches to surface

4. Urochordate larva – diagrams don’t do it justice!

5. Cephalochordates = Amphioxus = Lancelets (See figure 2-2 in text)

6. Living Agnaths - Lamprey Hagfish Where’s the link to protochordates?

7. Lamprey larva = Ammocoetes Tunicate larva See figure 3-6

9. Lamprey- Vertebrate Ectoparasites

10. Estimates of 30-40lbs of fish killed by a lamprey in adult life span

11. Human influences 1800’s Erie canal Weeland canal around Niagra falls !

12. Lamprey Control: Exploiting basic natural history

13. Lamprey Control: Larvicides and spawning barriers

15. AKA Slime eels!

16. Even Hagfish can be beautiful!

17. Ordovician Agnaths - Ostracoderms

18. Myllokumingia Haikouichthys A Recent Surprise – Vertebrates (or at least Craniates) in the Cambrian!!!!