1. Hot seat
Vertebrate edition

2. Class osteichthyes
This group is the first ossified bone group, they followed the cartilaginous fish which were chondrichthyes.
They have a swim bladder

3. Actinopterygii Ray finned fishes!
These fins have “veiny” structures visibly seen in them.
Ex: a sun fish

4. Class dipnoi Strong pectoral and pelvic fins Lobe finned
Lived in brackish waters in the Devonian era
Explain brackish and tell them devonian era was the era of fish. COELOCANTHS WERE IN THIS GROUP

5. Tetrapod 4 legged animals
Head separate from the body (unlike the fishes)
Pelvic bones are fused to the spinal chord for more support on land
Ears develop

6. Class amphibia
Consists of frogs and toads, salamanders, and caecilians
Means 2 lives, they live part their life in the water and part on land
Some go through a metamorphosis
Permeable skin?
If we smile and nod, she’ll stop asking us questions

7. Order urodela Salamanders! Have tails, and live in wet environments
Some can breath through their skin which is called cutaneous respiration

8. Order anura They also have cutaneous respiration
They do not have tails
Go through a metamorphosis period
We can breathe through our skin? Cool!

9. Order apoda They are NOT a worm! Or a snake!
They live under the ground, and lack eyes

10. Amniotes Lay eggs on land, which allows for out of water reproduction
The shell provides moisture and safety for the embryo to develop
Look over the amniotic egg parts

11. Clade reptilia
Has tuataras, snakes, lizards, turtles, crocodilians, and birds
They all have scales! This helps hold in moisture
Lay eggs with a shell on land (most)
Some odd cases of live birth

12. Squamata (squamates)
Lizards and snakes

13. Archosaurs Lineage that holds birds and crocodilians
Why are birds in the same group as crocodiles or alligators?

14. archeopteryx The first bird!
Had feathers for insulation, not flight! Had claws and a beak with teeth
Also the turkey vulture at the WCC

15. aves Birds! Light, hollow bones for flight
All characteristics adapted for flight