476 0. Schuchert — Notes on Arctic Paleozoic Fossils. 



JEllesmere Island. 



An excellent stratigraphic work by Holtedahl of the Uni- 

 versity of Kristiania has just appeared, dealing with the fossils 

 collected by Per Schei in his " series B " on Goose Fiord, 

 which is at the southwestern corner of Ellesmere Island. 

 Overlying the brown limestones of the Silurian, here of great 

 thickness, are dark, more or less thin-bedded limestones about 

 1000 feet thick, which, so far as can be judged from the fossils 

 at hand, are determined by Holtedahl to be of Lower Devon- 

 ian age, that is, equivalent to the Keyser of Maryland, and 

 apparently entirely beneath the New Scotland of the New 

 York Helderbergian. It is, however, possible that the Coeymans 

 may be represented in the upper strata of series B. Even 

 though but a few of the Keyser species can be determined in 

 the Arctic region, it is remarkable that any are found there, 

 since the two areas are more than 35 degrees of latitude 

 or about 2400 miles apart. 



Holtedahl describes a fauna of forty-three species, of which 

 twenty-one are named, and of these nine are new. The more 

 important of these fossils are as follows (those marked* also 

 occur in Maryland, and those markedf have closely related 

 representation) : — 



* Favosites cf. helderbergice Hall. 



* Cladopora rectilineata Simpson. 

 Thecia swinderenana (Goldfuss). 



Monograptus allied to Pristiogr apt/as colonus Barrande. There 

 is also a form of Monograptus in the New Scotland of New 

 York. 



Stropheodonta patersoni antiqua Holtedahl. This species 

 occurs in New York in the Onondaga. 



* Gypidula coeymanensis prognostica Schuchert. 



f Stenochisma deckerense arctieum Holtedahl. This species 



occurs in Maryland, 

 j- Camarotcechia litchfieldensis angustata Holtedahl. Also 



found in Maryland. 

 Lissatrypa scheli Holtedahl. Closely related to L. phoca. 

 f Spirifer modestus striatissimus Holtedahl. This species is 



common in Maryland. 



* Spirifer vanuxemi prognosticus Schuchert. 



* Loxonema fitchi Hall. 



f Leperditia symmetrica Holtedahl. Large forms of this genus 

 are characteristic of the American Lower Devonian. 



Bibliography. 



1865. C. F. Hall : Arctic Kesearches and Life among the Esquimaux. 

 1879. J. E. Nourse : Narrative of the Second Arctic Expedition made by 



Charles F. Hall. B. K. Emerson : On the Geology of Frobisher 



Bay and Field Bay, pp. 553-583. 



