146 



THE STOKY OP THE EAETH AND MAX. 



various size, ranging from a fooc to at least ten feet 

 in length, the body generally lizard-like in form, 

 with stout limbs and a flattened tail useful in swim- 

 ming. Their heads were flat, stoat, and massive, with 



V 



F'g. 16. EESTOEATIOTTS OF BiFHETES, DBNDHWPHTOW, HTLONOMUP, AND HYLEB- 

 PBTOlf, WITH CABBONIFEBOUS PLANTS IN THE DISTANCE. 



large teeth, strengthened by the insertion and con- 

 volution of plates of enamel. The fore limbs were 

 probably larger than the hind limbs, the better to 

 enable them to raise themselves out of the water. 



