28 



W. S. DUN. 



It is one of the interesting points in our continental 

 geology that this barrier was maintained through Mesozoic 

 time. We find that the Western and Northern Territory 

 Oretaceous faunas have a general Asiatic and European 

 facies. We also find that the same general character and 

 affinities persist through the Malay Archipelago, Timor, 

 New Guinea, New Caledonia, and New Zealand, whereas, 

 on the other hand, our Eastern Australian Oretaceous 

 fauna, on analysis, is seen to be unique. The only genera 

 in common being those types which may be regarded as 

 cosmopolitan forms, associated with which are many 

 strictly local genera and species. 



