1. Chordates - a hollow nerve cord - a notochord
- animals having:
- a hollow nerve cord
- a notochord
- a supporting rod under the
nerve cord
- pharyngeal pouches
- a tail beyond the anus

2. Chordate Groups 1) Nonvertebrate chordates a) Tunicates
- filter feeding aquatic animal having chordate features only as a larva
b) Lancelets
- fish-like animal without fins or
vertebrate

3. - ectotherms (cold-blooded) 3 groups 1) Jawless fish (hagfish)
- aquatic vertebrates with fins, scales, & gills
- ectotherms (cold-blooded)
3 groups
1) Jawless fish (hagfish)
2) Cartilaginous fish (sharks & rays)
3) Bony fish (flounder,trout,etc.)

4. - vertebrate that lives in water as a larva and on land as an adult
3) Amphibians
- vertebrate that lives in water as a larva and
on land as an adult
- larva = gills adult = lungs
- ectotherms
- some gas exchange through skin
EXAMPLES:

5. - vertebrate animal - lungs - lives on land - lays eggs
4) Reptiles
- vertebrate animal - lungs
- lives on land - lays eggs
- dry, scaly skin - ectotherm
EXAMPLES:

6. 5) Birds
- vertebrate animal legs
- feathers - lungs
- wings - lays eggs
- endotherm (warm-blooded) - light-weight bones

7. 6) Mammals
- vertebrate animal - lungs
- hair covering body - 4 chambered heart
- mammary glands to - endotherms
nurse young - live birth
Groups
MONOTREMES
- egg-laying mammals

8. MARSUPIALS
- mothers carry under-developed young
in a pouch.
EXAMPLES:

9. PLACENTALS
- mothers carry embryo internally
- placenta provides embryo with nourishment
- many groups ( carnivores, insectivores, primates, etc.)
EXAMPLES: