Trilobites from the Survey Peak, Outram and Skoki formations [upper cambrian-lower ordovician] at Wilcox Pass, Jasper National Park, Alberta

Trilobites belonging to 48 genera and subgenera are described from 148 levels in 630 in of strata constituting the Survey Peak and Outram formations and in the basal 6.4 m of the Skoki Formation at Wilcox Pass, 95 km southeast of Jasper, Alberta. A number of taxa from the McKay Group of adjacent British Columbia, originally described by Kobayashi (1955) are reassessed. Range charts show the vertical distribution of taxa and a correlation is proposed with the highest part of the Trempealeau Series, and with zones A to J established in Utah. New taxa include Carinocranium carinif erum n. gen. et sp., and the following new species: Apatokephalus? longifrons, Aulacoparia (Aulacoparia) sculpta, Benthamaspis canadensis, Isoteloides saxosimontis, Menoparia elegans, Pliomeridius lacunatus, and Presbynileus (Presbynileus) latifrons. Type material of the following species is redescribed or reillustrated: Corbinia horatio Walcott, 1924, Corbinia valida Walcott, 1925, Crepicephalus ceratopygoides Raymond, 1925, Dicellocephalus finalis Walcott, 1884, Dicellocephalus? flagricaudus White, 1874, Gonioteloides monoceros Kobayashi, 1955, Hungaia billingsi Walcott, 1924, Hyperbolochilus expansus Kobayashi, 1955, Leiostegium (Evansaspis) glabrum Kobayashi, 1955, Neoagnostus aspidoides Kobayashi, 1955, Paenebeltella convexa Kobayashi, 1955, Protopliomerops radiatus Kobayashi, 1955, Protopliomerops subquadratus Kobayashi, 1955, Ptychoparia? annectans Walcott, 1884, Symphysurina walcotti Kindle, 1929, Tesselacauda flabella Kobayashi, 1955, and Vermilionites bisulcatus Kobayashi, 1955; some of these are now assigned to different genera and species.