346 Dttlcr — Klamath Mountain Section, California. 



the same vesicular basaltic rock seen at so many other places. 

 Upon the western side occur slaty siliceous rocks with spots 

 suggesting organisms, but to the eastward on the Indian Creek 

 slope igneous rocks abound. 



Before following this line of limestones further northwest, it 

 seems best to note several small masses which occur about 

 eight miles northeast of the South Fork line but in approxi- 

 mately parallel position. One is on the divide between Prospect 

 and Hay Fork creeks where fossils 703 and 706 were collected, 

 and the other one and one-half miles southwest of Peanut 

 where traces of fossils (707) were obtained. 



Concerning the fossils from the last two localities as well as 

 those near the mouth of Rattlesnake (709, 709a, 710) and 20 

 miles further northwestward 711, Mr. Schuchert reports as 

 follows : 



"Localities 703, 707, 709, 709a, 710 and 711 have in common 

 one fauna in which the prevalent fossil is a coral of the genus 

 Chcetetes. I have had sections made of it and these I have shown 

 to Mr. Ulrich, who said that this type of Chcetetes is that of the 

 Devonian and not of the Carboniferous. Associated with the 

 Chcetetes is a compound CyathophyllumAike coral and a Clado- 

 pora, too much metamorphosed to be determined. At locality 

 709 there are two or three species of Stromatoporoids." 



" While the limestone of these localities is greatly metamor- 

 phosed, yet the preservation allows the making out of the genera 

 Chcetetes, Cladopora and Stromatopora. This association is 

 clearly indicative of the Devonian, and as the other California 

 Devonian localities, excepting 704 and 705 already noted, are of 

 middle Devonian time, it may be best to refer the above men- 

 tioned Klamath Mountain places to the same division." 



" Loc. 706 is apparently of the same limestone belt as that of 

 709, but the fossils are too obscure to determine this with cer- 

 tainty." 



Continuing northwestward from Rattlesnake Creek, the 

 limestone crosses Butter Creek near its mouth and the South 

 Fork of Trinity a few miles above Hyampom, and although it 

 may occur at many points within the next 40 miles it was seen 

 only at Three Forks Creek on the wagon road from Eureka to 

 Hoopa Yalley, where it yielded a few imperfect fossils among 

 which Mr. Schuchert recognizes "A species of Chostetes and a 

 Cyathophyllum-like coral common to nearly all the Devonian 

 limestone outcrops along the South Fork." 



Northeastern Devonian belt. — The northeastern belt of 

 Devonian limestones and shales lies chiefly in the Sacramento 

 drainage extending northward into the Klamath and Rogue 

 River region. The southern part lying within the Redding 

 Quadrangle, and as far north as Gazelle, has already received 



