Science 114-115

Chordates

Animals without a notochord

Notochord

Is a flexible,rod-shaped cartilage found inside the embryo of a chordate

Vertebrates

Group of animals with a backbone

Examples of vertebrates

Fishes amphibians reptiles birds and mammals

Cold blooded animals

Group of animals that cannot contain there temparature

Ex:fishes,reptiles

fishes

Have been around for 500 million years,they are aquatic animals with fins and tails they use to swim

Jawless fishes

The oldest group of animals.they do not have scales and jaws.among tge species of jawless fish, only the lamprey and hagfish remain

Bony fishes

Largest group of animals

Amphibians

Are group of animals that can stay both land and water