JURASSIC PERIOD. 



Fig. 817. 



447 



Archseopteryx macrura. 



819 the same of the Phascolotheriurn Bucklandi, — each twice the sizo 

 of nature. The former species, according to Owen, is most nearly- 

 related to the Marsupial Insectivores. The lower jaw of another 

 genus, called Stereognathus, has been found in the same bed. 



