Fig. 2. Section on Eighteen Mile Creek, Showing Exposure of the Upper 

 Devonic Formations 



The thicknesses are those given by A. W. Grabau in his paper, "The faunas 

 of the Hamilton Group of Eighteen Mile Creek and vicinity." {I6th Ann. Repl. 

 State Geologist, N. Y., 231-339, 1899; especially p. 240.) The formation names 

 are the ones used by F. Houghton in his paper "The geology of Erie County." 

 {Bull. Buffalo Soc. Nat. Sci., xi, 1-92, IQ14.) 



