372 abstracts: paleontology 



Lower Cambrian) in the Robson Peak district of the Canadian Rockies. 

 The majority of the species making up the fauna are new and are here 

 described. The new species are referable to the genera Mickwitzia, 

 Lingulella, Obolella, Holmia?, Wanneria, Callavia, and Olenellus. 



Edwin Kirk. 



PALEONTOLOGY.— Cam6 nan Geology and Paleontology, II. No. 12.— 

 Cambrian formations of the Robson Peak district, British Columbia 

 and Alberta, Canada. Charles D. Walcott. Smithsonian Mis- 

 cellaneous Collections 57^2. 327-343, pis. 55-59, figs. 11, 12. July 

 24, 1913. 

 The stratigraphic and structural features of the Robson Peak district 

 of the Canadian Rockies are described herein, particular attention being 

 paid to the Cambrian formations and their contained fossils. The 

 Cambrian section as shown in this area includes 12,200 feet of sediments, 

 representing Lower, Middle, and Upper Cambrian. Beneath these 

 beds lie 2,000+ feet of Algonkian sandstones and siliceous shales. The 

 section is capped by 3,000 feet of Ordovician. 



Several changes are proposed in the geographic nomenclature of the 

 region, and a number of new names are applied to mountains, rivers, 

 and glaciers. Twelve new formation names are proposed for subdivi- 

 sions of the stratigraphic series. Faunal lists of the different formations 

 are given, and broad correlations are made with the Mount Bosworth 

 Cambrian section. The paper is illustrated with splendid photographs 

 of the Canadian Rockies. Edwin Kirk. 



PALEONTOLOGY.— Cambnan Geology and Paleontology, II. No. 13.~ 

 Dikelocephalus and other genera of the Dikelocephalinae. Charles 

 D. Walcott. Smithsonian Miscellaneous Collections 57^^: 345- 

 412, pis. 60-70. April 4, 1914. 

 The trilobite genus Dikelocephalus which has been a catchall for 

 numerous Upper Cambrian species, is in this paper thoroughly revised; 

 foreign species are removed and referred to their proper genera; and 

 three new genera referable to the subfamily Dikelocephalinae are estab- 

 lished. Of the three genera originally referred by Beecher to the Dike- 

 locephalinae only one, Dikelocephalus, is retained. In the subfamily as 

 revised four additional genera are added, Conokephalina Brogger, and 

 three new genera, Saukia, Osceolia, and Calvinella. 



In order to show the stratigraphic relationships of the trilobites a 

 provisional classification of the pre-Ordovician formations of the Upper 



