14 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 98 



Ute formation: Feet 



Shale. Greenish argillaceous shale 61 



Limestone. Thin-bedded gray limestone 38 



Shale. Micaceous, arenaceous shale 75 



Limestone. Thin-bedded gray limestone 102 



Shale. Argillaceous shale 35 



Limestone. Thin-bedded limestone with fossils 85 



Total 396 



S pence shale member: 



Shale. Dark, bluish-black and greenish argillaceous shale. The 

 band of shale rests on the quartzitic sandstone and is nearly 

 40 feet thick 40 



Total 40 



This was designated the "Zacanthoides shale'' in the field. The 

 recently described Spence shale fauna, locality 55c, came from this 

 locality. 



Langston formation: 



Limestone. "To the north 3 miles a bed of limestone 30 feet 

 thick occurs between the quartzitic sandstones and the shale 

 and at Blacksmith Fork Canyon there is 390 feet of siliceous 

 limestone and 107 feet of bluish-gray limestone between the 

 shale and the quartzitic sandstone. These conditions indicate 

 that the Middle Cambrian was deposited upon an uneven 

 surface." 



Fossils were secured near the top (loc. 59O and near the Feet 



base (loc. 59e) 30 



Total 30 



The field label with the collection from locality 5o,f reads "top of 

 limestone below Spence shale." There is a slight variation in the rock 

 of the collection. For instance, a somewhat impure crystalline lime- 

 stone with yellowish specks contains only H elcionclla burlingi, which 

 species is lacking in typical crystalline limestone. 



Acrotreta cucharis, n. sp. Kochina? libertyensis, n. sp. 



Alokistocarc cuzona, n. sp. Kootenia convoluta, n. sp. 



Dolichometopsis sp. Lingulclla eucharis Resser 



Inglefieldia idahoensis, n. sp. Prozacanthoidcs libertyensis, n. sp. 

 Kochaspis idahoensis, n. sp. 



The field label with the collection from locality 59e reads, "base 

 of limestone just above the quartzite and underlying the Spence shale." 

 This lot contains a typical Ptannigania fauna. 



Dolichometopsis gregalis, n. sp. 

 Dolichometopsis poulseni, n. sp. 

 Dolichometopsis sp. 

 Kochaspis dispar, n. sp. 



