66 RECONNAISSANCE IN NORTHERN' ALASKA IN' 1901. 



Paleozoic fossils from the Cliandlar Eiver gravels. 



Locality 211. Indeterminable. 



Locality 22. Syringopora sp. 1. 

 Locality 2. Syringopora sp. 2. 



Locality 47. Spirifer, disjunctus type. 



Locality 5. Cyathophylloid coral. 



Locality 203. Crinoid stems. 



Syringopora, so far as known, is not found above the Carboniferous; therefore 22 and 2 can be 

 referred, with little doubt, to the Paleozoic. 



The spirifer of locality 47 represents a type which is not found below the Devonian, and is, in a 

 measure, restricted to rocks of that age. This spirifer can pretty safely be referred to the Devonian, and 

 if, as I suspect, the form is Sp. disjunctus itself or one of its close allies, probably to the Upper Devonian. 



The coral found at locality 5 probably belongs to the genus Acervularia. The age indicated is 

 certainly Paleozoic, and probably Devonian. 



The crinoid fragments found at locality 203 indicate nothing positive as to age. From their 

 character and abundance I should be inclined to determine the horizon as Paleozoic. 



It should also be noted that the trend of the series continued still farther east- 

 ward, beyond the Chandlar River Basin, strikes the Porcupine near the Lower Ram- 

 parts, where Devonian forms were collected by Kennicott, and where Mr. McCon- 

 nell, of the Canadian geological survey, reports the limestone to yield such fossils 

 as Atrypa reticularis, with fragmentary specimens of corals referable, in part at 

 least, to the Devonian. 6 It seems highly probable that the Lisburne formation may 

 also be correlated with the similar limestone and shale formation occurring at Cape 

 Lisburne, which, though nearly 400 miles distant, undoubtedly represents the west- 

 ward continuation of the same mountain axis. (See PI. V and fig. 1, p. 40.) This sug- 

 gestion is based, in a measure, on the statements of different persons who have found 

 Paleozoic fossils in the Cape Lisburne region, and more especially on the recent 

 reports of Mr. H. D. Dumars and Mr. A. G. Maddren. The fossils collected by 

 Mr. Dumars in the region, with notes by the collector, have been presented hj Mr. 

 Maddren to the United States National Museum, where they have been examined 

 by Mr. Schuchert, whose communication on them to the writer is as follows: 



Paleozoic fossils from the Cape Lisburne region. 



There is an interesting coral fauna of Middle Devonian age from "limestone cliffs 4 miles south of 

 Cape Lisburne, just south of the mouth of a considerable stream, where the rocks strike east and west, 

 and dip south at 45° " (Dumars). This limestone contains — 



Endophyllum, 2 species. 



Syringopora, near S. tabulata. 



Syringopora, near S. perelegans. 



Diphyphyllum, near D. simcoense. 



Diphyphyllum, near D. stramineum. 



Zaphrentis, probably 2 species. 



This limestone appears to be the same formation as that discovered by you last summer [at head 

 of Anaktuvuk River] at localities 496, 498, 499, 501, 523, and 524, but more particularly at 455 and 528. 



nTrans. Chicago Academy Sci., vol. 1, 1867. 6 Ann. Rept. Geol. Survey Canada, new series, vol. 4, 1890, p. 133 D. 



