METAMORPHIC SERIES OF SHASTA COUNTY. S97' 



Terebratula hastata, Sowerby. 

 Fenestella sp. 

 Rhombopora sp. 

 Crinoid stems. 

 Clisiophyllum gabbi, Meek. 

 Lithostrotion califoi'iiiense, Meek. 

 " sublceve, Meek. 



About nine miles north of Baird in siliceous shales on the 

 McCloud river was found in addition to many of the above 

 species : 



Pterinopecten n. sp. aff. P. diguatus, Hall, of the Devonian of 

 New York. 



Affinities of the fatma. The list of fossils contains a total of 

 84 species, of which 19 were not specifically identified. Out of 

 the 65 forms specifically determined 26 occur in the Waverly 

 of the Mississippi valley, although 8 of these also occur in the 

 Upper Carboniferous of that region. Fifteen are known to occur 

 in the Devonian of the eastern states, but of these 6 also occur 

 in the Waverly ; thus there are only 9 forms that in the Missis- 

 sippi valley, or east of it, would be considered as decidedly 

 Devonian. Thirty-six are known from the Waverly and Lower 

 Carboniferous of Utah, Nevada, and New Mexico ; of these 29 

 correspond to forms described by Walcott from the Lower Car- 

 boniferous of the Eureka district, Nevada. Three species, 

 Avicidopectencarboniferas, Avicidopecte?i interlineatiis, and Macrodon 

 teniustriatus, have been considered characteristic of Upper Car- 

 boniferous. 



With this assemblage of species one would not hesitate to 

 place these strata low down in the Carboniferous, but whether 

 they are equivalent to the Waverly is a question not so easily 

 settled. Although about one-half of the species are found in 

 the Waverly, and nearly one-fourth in the Devonian of the 

 Mississippi valley, 29 of these, and a large number of others as 

 yet unknown in California, were found by C. D. Walcott 1 in the 

 Eureka district, Nevada, in strata of Lower Carboniferous age,, 



1 Monograph VIII., U. S. Geol. Survey. Paleontology of the Eureka District. 



