EXTINCT ANIMALS 



specimens of jaw-bones of this age were obtained 

 seventy years ago in the Stonesfield Slate near 

 Oxford by two undergraduates of the University, 

 and it was at first supposed, on account of their 

 occurring in such ancient rock as the Oohte 



Fig. 135. — View of the upper surface of the right hind-foot of 

 Diprotodon, as discovered by Professor Stirling of Ade- 

 laide, South Australia. The left-hand figure has the 

 astragalus (ankle-bone) removed, whilst it is in place in 

 the right-hand figure. 



(see list of strata on page 60) that they must 

 be jawbones of lizards. Soon, however, the 

 fact was noticed that the teeth had double 

 fangs, and it became clear from this, as well as 

 the shape of the jaws and teeth, that they had 



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