CHAPTER 14 FISH, AMPHIBIANS, AND REPTILES p. 394
All are vertebrates and belong to the Phylum Chordata “chordates” To be a chordate, certain characteristics must be present at sometime during its life. 1) Notochord (p.395) - a rod-like piece of cartilage that runs along the dorsal side.
- it is present in humans during early development. - it turns into the backbone.
-some have a notochord their entire life. (not vertebrates). Example 1: tunicate