Diller — Klamath Mountain Section. California. 349 



The best section in this belt was obtained five miles north 

 of Wild wood and one mile east of Hay Fork, where the lime- 

 stone is yellowish gray and crystalline with inconspicuous 

 oolitic structure. The mass is less than a quarter of a mile in 

 length and has a thickness of about 200 feet. Upon the south- 

 west it is underlain by nearly 100 feet of reddish siliceous beds 

 succeeded below by a great mass of basaltic rock which forms 

 the bluffs along Hay Fork Creek. Upon the northeastern side 

 the limestone is overlain by 100 feet of yellowish and reddish 

 siliceous shales limited by the same sort of igneous rocks as 

 that below. In the neighborhood of Harrison gulch there is 

 much black shale, but its relation to the limestone was not 

 determined. Associated with the Carboniferous, as also with 

 the Devonian, there is an abundance of igneous rocks, especially 

 of a basic type, and they occupy much larger areas than the 

 sedimentary rocks. 



Fossils were found at five localities in this belt of Carboni- 

 ferous, and with many others from the northeastern belt were 

 referred to Dr. George H. Girty, who reports the following 

 forms from the Hall City locality (702) : 



Alga. Spirifer or Spiriferina. 

 Amblysiphonella, two species. Spirifer ? sp., resembling Spiri- 

 Sponges, miscellaneous. fer sulcifer Shumard. 



Zaphrentoid coral. Rhynchonella, resembling Un- 

 Fistulipora sp. cinulus Theobaldi Waagen. 



Rhombopora sp. Camarophoria ? sp., near S. su- 

 Stenopora ? sp. perstes Verneuil. 



Miscellaneous Bryozoa. Stacheoceras n. sp. 



Martinia 2, two species. Gasteropod undet. 



From the limestone five miles north of Wild wood and one 

 mile east of Hay Fork Creek (701) Dr. Girty reports : 



Alga. Product us, cora type. 



Archaeocidaris sp. Martinia ? sp. 



Crinoid stem. Camarophoria? sp. 



Orthis sp. Enteletes? sp. 



Fusulina? sp. Orthis sp. 



Lithostrotion ? sp. Squamularia Guadalupensis 

 Archaeocidaris sp. Shumard? 



Crinoid stem. Seminula? sp. 



Spirifer sp. 



" One of the most common and at the same time peculiar 

 fossils collected at this group of localities is a small pagoda- 

 like body whose exact affinities are very puzzling, but which I 

 believe will prove to belong to the calcareous algae. Small 

 concretionary forms, which appear to be inorganic, are also 

 common. The fauna for the most part, however, is scanty 



