O. D. Walcott — Position of the Olenellus Fauna. 331 



Zone b. — Forty-five feet higher up the fauna is much 

 larger and includes : Linnarssonia miser a Billings (sp.), 

 Lingulella sp. a, Orthis sp. ?, Stenotheca sp. ?, Agnostics 

 punctuosus Angelin, Agnostus, 5 sp., b, e, f, g, h, Micro- 

 discus punctatus Salter, Paradoxides Davidis Salter, Par- 

 adoxides HicJcsi Salter, Paradoxides sp. ?, Anopolenus 

 venustus Billings, Conocoryphe elegans, Ctenocephalus Mat- 

 theioi Hartt (sp.), Prinnys venidosa Salter, Ptychoparia 

 Robbi Hartt, P. variolar is Salter, Holocephalina inflata 

 Hicks, Agraidos socialis Billings. 



From 235 to 250 feet from the base a belt occurs in 

 which a small species of Aristozoa occurs in large num- 

 bers, associated with Lingulella sp. a, Agnostus sp. ? and 

 the heads of a small Ptychoparia f, sp. nndet. 



8. Alternating bands of dark shale and dark, compact sand- 

 stone that carry a small species of Orthis in large numbers, 400 



The section is here cut off by the shore of Conception Bay.* 



On the islands in the bay the Upper Cambrian horizon is 

 well developed. In the lower arenaceous shales at Lance Cove, 

 on Great Bell Island, I found Eophyton sp. ?, Crusiana semi- 

 jplicata Billings, Arthraria antiquata Billings, Olenus sp. 

 undet. and, at a higher horizon, near the center of the island, 

 Lingulepis affinis Billings, and Lingula f Mtirrayi Billings, 

 with fragments of Cruziana. In the sandstone at the summit 

 of Little Belle Island, twenty feet above a band of sandstone 

 carrying Lingula f Billingsiana Whiteaves and an elongate, 

 narrow species of Lingulella, a long slender Hyolithes ? and a 

 broad species of Hyolithes occur. In the dark argillaceous 

 shales beneath, L. f Billingsiana occurs in great numbers. 



The conglomerate (No. 1, of the section) was traced, just 

 north of the outcrop of the gneiss, for a mile to the west of 

 Manuel's Brook and the shales and limestone of 2 were seen in 

 a number of sections, resting directly upon it; On the brook 

 the stratigraphic succession is unbroken up to the summit of 8, 

 and the strata are conformable and undisturbed with the ex- 

 ception of the dip of 12° to the north. 



The Manuel's Brook section is the only one known to me on 

 the North American Continent where the typical Olenellus and 

 Paradoxides faunas occur in an unbroken stratigraphic section. 

 The Olenellus fauna is well developed and typical, and the 

 same is true of the Paradoxides fauna. f 



* I hope to prepare a paper on the Paradoxides zone of the Cambrian, and will 

 then give the distribution of the fauna in the Manuel's Brook section more in de- 

 tail, and add descriptive notes on the genera and species. 



f In Newfoundland my work was made much easier by the assistance given by 

 Rev. M. Harvey, of St. Johns, Father Morris, of Villa Nova Orphanage, and a 



