1. A Survey of Living Vertebrates
20-2
Materials:
Xerox of section 20-2
Xerox and transparency of amniotic egg.
Side Four chapter 10 - examples of vertebrates.

2. What is it? (side four - chapter 10)
Manta ray - cartilaginous fish
Puffer fish - bony fish
Snapping turtle - reptile
Crocodile - reptile
Sand lizard - reptile
Flamingo
Swan - feeding
etc.

3. Can you….. Describe the characteristics of living vertebrates?
Describe the amniotic egg?

4. Textbook page 475
What are the key points that each section contains?

5. Classification of Vertebrates
All vertebrates have a backbone.
Most also have
two sets of appendages
closed circulatory system
ventral heart
gills or lungs

6. Jawless Fish Only living vertebrates without jaws Lamprey
Hagfish (page 471)

10. Cartilaginous Fish Sharks, skates, rays Chondricthyes
Fearsome predators
Few attack humans

14. Bony fish enormous and diverse class Ostrichthyes ray-finned fish
lobe-finned fish - evolved to tetrapods

17. Amphibians few species few survived Permian extinction
lay eggs in water
larva have gills
adults have lungs
moist skin as respiratory surface

19. Attracting a mate
Mating behavior

20. Varnished to save water

21. Reptiles Internal fertilization Fully terrestrial - first Amniotic egg
Three orders: Turtles and tortoises; crocodiles and alligators; lizards and snakes

24. Birds
Class Aves
Feathers
Amniotic egg
27 different orders

36. Mammals All have mammary glands Monotremes: leathery-shelled eggs
Marsupials: pouched
Placental mammals

37. Placental mammal

41. Xerox 20-2 13 two sets 14 gills, lungs 15 T 16 cartilage 17 T 18 lungs
21 lizards, snakes
22 body heat
23 T
24 marsupials
1 g
2 h
3 f
4 d
5 b
6 a
7 c
8 e
9 i
10 f
11 i
12 d

42. 13 two 14 gills or lungs 15 T 16 cartiledge 17 T 18 T 19 T 20 T
Xerox page two
13 two
14 gills or lungs
15 T
16 cartiledge
17 T
18 T
19 T
20 T
21 lizard, snakes
22 body heat
23 T
24 marsupials