BY A. B. WALKOM 17 
The general proportions of the various groups and the 
affinities of the majority of the species in this flora point 
to its being of Lower Cretaceous age. It agrees in greatest 
detail in this respect with the American Kootanie and 
Patuxent floras and with the German Wealden flora, and 
we have little hesitation in pronouncing it a typical Lower 
Cretaceous flora equivalent to the Neocomian-Barremian 
or Wealden stages. 
If the fossil plants can be relied upon in fixing the age 
of the Burrum Series—and I believe they can—an 
important question is raised concerning the age of the 
oe 
uN 
Fie, 5—Map showing approximately the distribution of floras of Lower 
Cretaceous Age. (Mainly after E. W. Berry). 
Maryborough and Rolling Downs Series. The Rolling 
Downs Series has generally been regarded as Lower 
Cretaceous in age, but paleontologists appear to have 
been loth to refer it definitely to Upper Jurassic or Lower 
Cretaceous in spite of the fact that an extensive invertebrate 
fauna had been described. If we are correct in placing 
B 
