Show:
Chordate Past & Present
Jaw-less Fish
Amphibians
Birds
100
fish, amphibian, reptile, bird, and mammal
What are the five groups of vertebrates?
100
"Double life"
What does amphibian mean?
100
reptiles
What class are birds in?
200
96%
What percent of modern chordates are vertebrates?
200
the "Age of Fishes".
What was the Devonian period known as?
200
in the water
Where are amphibians found during there larvae stage?
200
there ability to regulate their body temperature and their feathers
What makes birds different from other reptiles?
300
The Echinoderms
Who are the chordates closet related ancestors?
300
A descendant of jawless fish?
What are lampreys and hag-fishes?
300
a fossil showing that is was, part fish and part tetrapod
What is the "fishapod"
300
Dinosaurs
What extinct animal are birds related to?
400
Fish.
What is the largest group of vertebrates.?
400
Lampreys and hap-fishes
What fish are classified as vertebrates even though they lack backbones?
400
the swampy Carboniferous Period
During what period were the amphibains considered to be the most dominant animals?
400
Scales
What are bird legs covered with?
500
A strong connective tissue that is more softer and more flexible than bone.
What is cartilage?
500
The great white sharks
What modern animal is related to the Dunkleosteus?
500
Frogs & Toads, Salamanders, and Caecilians.
What are the three orders of amphibians that survive until today?
500
the "Archeopteryx"
What was the first noted ancestor of birds?