16 



JOHAN KIJER. [sec. ARCT. EXP. FRAM 



This determination of age is based upon tlie 3 Produdella forms 

 appearing in Dli. (er. aff. lacrimosa Gonr., ardirostrata Hall and 

 subaculeata Muech var. latior Guricii), which Meyer considers charac- 

 teristic for Chemung. 



Several conditions of faunistiral and stratigraphical nature do not 

 support this opinion of 0. E. Meyer. 



It is of importance here to note, that Meyer has found several real 

 Middle Devonian brachiopods in Dh, e. g. Spirifer elegans Stein, var.. 

 Spirifer gregariiis Clapp. and AVUsonia princeps Barr., which he calls 

 "vereinzelte Resle der mittelde\'onischen Fauna" 



The Middel Devonian forms have now been increased by Macropeta- 

 Jlchthys Sclieii. this characteristic genus until the present time having 

 been found only in the upper part of the Lower Devonian and in the 

 Middle Devonian. 



It seems to me, that the Middle Devonian character of the fauna 

 in Dh in this manner is marked so plainly, that this zone cannot be of 

 anv high Upper Devonian age (Chemung). 



In reality, even the 3 Produdella forms are not of decisive value. 

 Produdella ex. aff. lacrimosa Conr. and Produdella ardirostrata 

 Hall are also found in the characteristic Middle Devonian zone Dg, and 

 Produdella subaculeata Murch was known previously botii from the 

 Middle Devonian and from the Upper Devonian. 



It therefore appears to me to be evident that the zone Dh, so far 

 from being parallel to Chemung, should preferably be assigned to the 

 lower part of the Upper Devonian, or with even greater reason to the 

 transition strata between the Middle and the Upper Devonian. This view 

 is confirmed by the small extent of the strata ^ and the stratigraphical 

 results wdiich may be deduced from the fauna in the succeeding series E. 



II. Fish Remains And Other Fossils From Series E. 



This series, which superimposes the marine series D, forms the 

 uppermost member of the Devonian. It is a continental formation, the 

 facies development of which corresponds to the Old Red facies, in the 

 state of New York (Catskill), and East Canada. In his preliminary 

 report Schei gives a brief survey of this series. A somewhat fuller 



1 P. ScHEr, Preliminary Report, 1903, Page 7. 



