LAND ANIMALS OF THE COAL PERIOD. 



369 



I possess small jaw-bones of Dendrerpeton^ about tlic size of those of 

 this species, but having the teeth similar in form to those of the larger 

 species ; these I suppose to have belonged to young individuals. 



The forms of the jaw-bones and of the vertebras, ribs, scapular bone, 

 bones of the limbs, and bony scales, indicate that in general form this 

 creature was not far removed fi'om its larger relative. The bones of 



Fig. 143. — Dendrerpeton Oioeni, Dawson. 



)n) MaxiUary bone and mandible ; natural size. 

 ib) Portion of skull ; natural size. 



(c) One of the large anterior teeth; magnified. 



(d) Exterior teeth ; magnified. 



(e) Foot; enlarged. 



(/) Portion of cuticle showing homy scales; 



enlarged. 

 (17) Cuticle of posterior part of body; natural 



size, showing supposed position of 



hind leg at l>. 



the foot, represented in Fig. 143, especially deserve attention. This 

 is the most perfect foot of Dendrerpeton hitherto found ; and I have 

 enlarged it in the figure in order more distinctly to show its parts. 

 It presents three long toes, with traces of a smaller one at each side, 

 so that there were probably five in all. If tliese toes be compared 

 with the footprints on tlic slab discovered by I)r Harding, represented 

 in Fig. 139, it will be seen that they very closely correspond, though 



