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.

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.

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

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

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

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

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

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

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

Attracting a mate Mating behavior

Varnished to save water

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

Birds Class Aves Feathers Amniotic egg 27 different orders

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

Placental mammal

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

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