a King— Geology of the mh Parallel 



quartzite ; but the present evidence would seem tc 

 Lower Helderberg to the region below the Ogden c 

 From the horizon of the Upper Helderberg wi 

 the following : 



From the upper members of the Devonian, ranging from the 

 Upper Helderberg to the Chemung inclusive, there were ob- 

 tained : 



Favosites polymorpha Goldf., Meek. Rhynchonella Emmonsi, n. sp. 



Syringopora Macleuri ? Bill. Pentamerus, sp ? 



Smithia Hetmahii iowrd, ifeefc. Cryptonella, sp.?=Rensellaeria? sp. 



Cyathophyllum Palmeri Meek. Meek. 



Strophodonta canace H. & W. Paracyclas peroccidena, n. sp. 



Productus subaculeatus Murch. Pterinea, sp.? 



Spirilera alba-piuensis, n. sp. Pleurotomaria, sp. undet. 



" argentaria Meek, (very closely Isonema, sp. ? 



allied to S. zigzag Hall). Bellerophon neleus, n. sp. 



Spirif era Engelmani Meek. Orthoceras. sp. ? 



Atrypa reticularis L. 



In a single instance, namely, that at White Pine, the Che- 

 mung is overlaid by black shales, the probable equivalent of the 

 Grenesee group, from which are collected the following: 

 Leiorhynchus quadricostatus Hall= Nuculites triangulatus, n. sp. 



^' ' - . - - - papyraceus Linulicardia fragosa = Posidonomya 



From our present knowledge it would seem that the lower 

 1,200 or 1,400 feet of the Wahsatch limestone is strictly Devo- 

 nian. The Genesee and the Chemung are followed by beds carry • 

 ing forms having a close resemblance to the Waverly group, but 

 which are considered by Messrs. Hall and Whitfield as closely 

 allied to the Upper Devonian. They consist of the following 

 species : 



Michelinia sp.? Athyris planostdcata ? Phillips. 



Streptorhynchus equivalvis Hall. Rhynchonella pustulosa? White. 



" inflatus H. & W. Terebratula Utah, n. sp. 



Strophomena rhomboidalis Whal. Euomphalus (StraparoUus) IJtahensis, 



Chonetes Loganensis, n. sp. n. sp. 



Productus, sp.? (fragments only). Euomphalus latua var. laxus White. 



Spirifera centronata MticA. '■ (StraparoUus) Ophirensis n. sp. 



" alba-pinensis, n. sp. Proetus peroccidens, n. sp. 



Athyris Claytoni, n. sp. " Loganensis, n. sp. 



The thickness of the Waverly series is not definitely known, 

 since there is quite a gap of barren limestone between it and 

 the next fossiliferous zone. Not far, however, above the Wa- 

 e Oquirrh Range and W " 

 >-carboniferous, such as : 



