CANNON BALL MARINE MEMBER OF LANCE FORMATION 547 



as Tertiary (?), the doubt being thus expressed on account of the 

 Cretaceous character of the Cannonball marine fauna. The 

 writers beheve that greater weight should be given to the evi- 

 dence of the marine faunas and the dinosaurs, and that, in view 

 of the strong evidence presented by these faunas, the correla- 

 tions made on the basis of fossil floras should not be considered 

 as conclusive/ 



'This paper was submitted for publication in the Journal of Geology in June, 

 1914. Further studies on the Lance problem have strengthened the conviction of ' 

 the writers that the Lance is Cretaceous. 



