[kindle] STRINGOCEPHALUS BURTONI 23 



The rocks from which McConnell's fossils came have now been 

 divided into six formations representing in the Norman district more 

 than 2,000 feet of Devonian sediments^ It is not surprising that the 

 attempt to treat the faunas from these different formations as a 

 single fauna made it difficult to place the S. hiirtoni fauna of Manitoba 

 and the Ramparts in the same horizon. Present information makes 

 it clear that S. burtoni represents essentially the same geological 

 horizon throughout its known distribution. 



The most important lots of McConnell's fossils came from Hay 

 river falls and from the Ramparts, localities 600 miles apart. At 

 both localities the upper part of the Devonian section consists of 

 limestones. It was not discovered during McConnell's reconnaissance 

 survey that the Hay river limestone which carries an Upper Devonian 

 fauna, changes in going north to a shale and sandstone, and disappears 

 altogether 65 miles south of the Ramparts. The limestone, which at 

 the Ramparts is the uppermost formation of the Devonian, lies 1,500 

 feet or more lower in the section than the Hay river limestone and 

 holds a Middle Devonian fauna. The sections shown in Fig. 1 

 indicate the relative positions held by these limestones in the Mac- 

 kenzie Valley Devonian section. 



Possible Occurrence in the United States 



Prof. Chas. Schuchert^ has recorded the finding of a loose speci- 

 men of S. burtoni in southern Minnesota and has expressed verbally 

 the opinion that this fossil would probably be found in the Minnesota 

 Devonian. Prof. C. R. Stauffer, w^ho has been recently working on 

 the Devonian of that State, read at the last meeting of the Palaeonto- 

 logical Society of America a paper on his results. His account of the 

 Devonian faunas M-hich he has found in that State does not appear to 

 lend any support to the theory that the S. burtoni fauna extends 

 southward into the United' States. So far as present knowledge goes, 

 it may be considered to be in North America a strictly Canadian 

 fauna. 



^ E. M. Kindle and T. O. Bosworth: Oil-bearing rocks of Lower Mackenzie 

 River Valley. Can. Geol. Surv. Summ. Rept., 1920, Pt. B. 

 8 Bull. U.S.G.S., No. 87, 1897, p. 417. 



