12 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 98 



Vicinity of Brigham City. — The collections of the 40th Parallel 

 Survey evidently were made from the shaly beds several miles north 

 of Brigham City. In 1906 Walcott worked over the region and 

 collected freely and in 1926 I secured large collections here. Cambrian 

 beds crop out not only on the western ridge of the Wasatch, but in 

 Box Elder Canyon, east of Brigham and particularly on the rims of 

 the Mantua Basin at the head of the canyon. Walcott recorded the 

 sequence but gave the thickness of only one bed. 



Blacksmith dolomite: Feet 



Massive, gray dolomite 



Ute and other formations: 



Limestone or dolomite. Bluish-gray, massive-bedded limestone 



Limestone and shale. Gray, calcareous and siliceous shale, with 



thin-bedded bluish-black limestone (loc. 55e) 193 



Limestone. Bluish gray. This bed cannot be more than a few 



feet thick, according to information on the field labels 



The collections from localities 55c and 20x contain species from 

 all the beds between the Brigham and Blacksmith formations. Below 

 are listed only the species supposedly belonging to the Ptarmigania 

 fauna. The selection was based on generic association and is not 

 regarded as positive enough for correlation purposes. Locality 55e 

 is about 150 feet above the quartzite and may yield only Spence shale 

 species, but two species have been selected as older : Lingulella 

 eucharis Resser and Kochina brighamensis n. sp. From locality 20x a 

 larger number of species are referred to the Ptarmigania fauna, all 

 of which are new. 



Alokistocarella brighamensis, n. sp. Kootenia mendosa, n. sp. 



Clavaspidella zvasatchensis, n. sp. Poliella wasatchensis, n. sp. 



Girvanella sp. Taxioura typicalis, n. sp. 



Kochina? elongata, n. sp. Wimanella maladensis , n. sp. 

 Kootenia germana, n. sp. 



Brigham quartzite: 



Gray quartzitic sandstone, weathering brown, with partings of Feet 



green arenaceous shale 



Base unexposed. 



BEAR RIVER RANGE 



Blacksmith Fork. — It is not necessary to reprint the section in 

 Blacksmith Fork Canyon. Notes relative to two lots of fossils from 

 the Langston limestone is all that is needed. 



Locality 55p, Langston formation. This material was collected by 

 Walcott and Burling in 1906, between 70 and 100 feet below the top 



