352 Dlller — Klamath Mountain Section, California. 



beyond Delta, and adjoins the Baird formation. To the west- 

 ward it is limited in part by the Devonian near Kennett, but 

 chiefly by the igneous rocks of Trinity and Salmon Mountains. 

 To reach the latter it overlaps the Devonian limestones, shales 

 and sandstones and covers them near the Sacramento between 

 Backbone and Hazel Creek. Judging from its areal distribu- 

 tion and stratigraphic relations, it appears to belong to the 

 lower portion of the Carboniferous section of that region. 



Fossils were collected from the limestone pebbles at many 

 points on both sides of the Sacramento. Although in a major- 

 ity of cases' the fossils are clearly in transported fragments 

 derived from an older limestone in place, in other cases the 

 same fossils are directly enclosed by the paste of the conglom- 

 erate without distinct evidence of such derivation. Concern- 

 ing the fossils from the pebbles, Mr. Schuchert regards them 

 as of Devonian age identical with those in the limestone of 

 the Kennett region. He says " As to the age of the conglom- 

 erate I can only say that it is younger than the Middle 

 Devonian." 



The relation of the Bragdon formation upon the eastward 

 to the Baird, appears to be that of conformable stratification, 

 and Baird fossils have been found close to but not within the 

 area assigned to the Bragdon formation. Conglomerates in 

 the Baird formation contain the same fossils in pebbles and 

 paste, especially when there is considerable igneous material. 

 Similar tuffaceous conglomerates with fossiliferous limestone 

 fragments occur at several horizons higher in the section. 



The only fossils yet found in the Bragdon formation which 

 certainly belong to its period of deposition, are some plant 

 remains enclosed in light colored sandy shales a few miles west 

 and northwest of Slatonis. 



These specimens were all referred to Professor William M. 

 Fontaine, who examined the material with great care, and fully 

 recognizing the macerated condition of the specimens and their 

 distortion after burial, remarked " that it is impossible to 

 determine positively even their generic character." However, 

 "All the imprints which show an} 7 recognizable features are 

 strongly suggestive of Brachyphyllnm." " Brachyphyllum is 

 most developed in the Jurassic and lowest Cretaceous. If we 

 may regard this plant as belonging to that genus, then, so far 

 as its evidence goes, the strata are Jurassic or lowest Creta- 

 ceous. But as the generic place of the fossil can not be deter- 

 mined decidedly, and the amount of material is so small, the 

 age can not be certainly fixed. A Jurassic age is indicated." 

 With the conclusions of Professor Fontaine, Professor Lester 

 F. Ward fully concurs. 



Considering the importance of the imperfect fossils and 



