Table for Review (for notebooks or blackboards).
===================+========+========+========+========+========
| Fish | Tadpole| Frog | Turtle | Lizard
-+++++
Limbs, kind and | | | | |
number | | | | |
-+++++
Are claws present? | | | | |
How many? | | | | |
-+++++
Covering of body | | | | |
| | | | |
-+++++
Teeth, kind of, | | | | |
if present | | | | |
-+++++
Which bones found | | | | |
in man are lacking?| | | | |
-+++++
Chambers of heart | | | | |
| | | | |
-+++++
Respiration | | | | |
| | | | |
-+++++
Movements | | | | |
| | | | |
=============+========+========+========+========+==
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Fig. 283.—Big-headed Turtle (Platysternum megalocephalum). × 1/2. China. This and Fig. 282 suggest descent of turtles from a lizardlike form. Figure 282 shows earlier ancestors to have been gill breathers.
