PEAI.E.] 



EESUME PAL^ZOIC EOCKS CAEBONIFEEOUS. 



619 



Organic contents. 



I have already intimated that a portion of the beds referred by me to 

 the Carboniferous may be Devonian or Silurian, but all the determinable 

 fossils collected are Carboniferous in their facies. Many of them are 

 undoubtedly referable to the Coal Measures, which in our district con- 

 sist almost entirely of limestones. The forms of some of the subdivis- 

 ions of the Carboniferous are so apt to be vertically distributed through- 

 out the others that the division is of little use except on lithological 

 grounds, and our sections are too general to do that in the district under 

 consideration. A list of fossils from the west side of Soda Spring Hills, 

 collected in 1871, is given in a preceding chapter. 



-The following is a list of Carboniferous fossils collected in the district 

 during the season, and kindly identified for me by Professor White : 



List of Carboniferous fossils. 



Zaphrentis sp.? 

 Productus sp. ? 

 Hemipronites sp.? 

 Zaphrentis sp.? 

 Productus sp.? 



Zaphrentis sp. ? 

 Archimedes sp.? 

 Criuoidal stems. 

 Corals indistinct. 



Spirifer sp.? 



Spirifer striatus. 

 tip! r iter sp.? 

 Spir ifer ( Ma rtin la ) 

 Zaphrentis sp.? 

 Glauconome sp. '? 

 Bhomhopora sp.? 

 Chonetes platynota. 

 Syringopora sp. ? 

 Fenestella sp. ? 

 Crinoid columns. 



Productus multisfriatus. 



Hern ipronites crenistria. 

 Spirifer sp. ? 

 Euomphalus sp.? 

 Plati/crinus sp.? 

 Zaphrentis sp. ? 

 MureJiisonia sp. ? 

 Synocladia sp. ? 

 Productus sp.? 

 Proetus sp.? 

 Streptorynefiw sp. ? 

 Ptilodyctia sp.? 



planoconvexus. 



Labarge Mountain, Stations 19 and 



20. 

 Station 25, west of Fontenelle Canon. 

 Coketown Butte, north of Smith's 



Fork of Beer. 

 Station 47, South of Piney Creek- 

 Station 48, between the heads of 



Piney Creek. 



In bowlders from conglomerates of 

 the Wahsatch Group, north of 

 Bitterroot Creek. 



Virginia Peak, near the north end 

 of the Salt River Range, on the 

 east side. 



\ ' 



J 



i McDougal's Pass, at head of Sickle 

 \ Creek. 



1 



■ Station No. 57, at the north end of 

 the Salt River Range, west side. 



