Page:First course in biology (IA firstcourseinbio00bailrich).pdf/387

 Table for Review (for notebooks or blackboards).

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======+========+========+========+========+========                  |  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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(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.