Section IV., 189G. [ ISl ] Trans. R. S. C. 



IX.— Notes on some of the Fossil Organic Remains comprised in the 

 Geological Formations and Outliers of the Ottawa PaUvozoic Basin. 



By Henry M. Ami, M.A., D.Sc, F.CI.S., Etc. 



(Communicated by Dr. R. W. Ells, F.R.S.C.) 



(Read May 19, 1896.) 



That the old Piil.TOzoic seas which had invaded the territory now 

 occupied by the Ottawa Yalley were teeming with life of various kinds 

 is evinced by the fact that the sedimentary formations which now cover 

 the old Archaean floor in the various outliers referred to in Dr. Ells's 

 paper {vide supra) contain abundance of fossil organic remains of great 

 interest. 



These fossil remains have received considerable attention on the 

 part of the members of the Greological Survey of Canada since early in 

 the fifties, and numerous reports and papers have appeared from time to 

 time both in the '• Ee ports of Progress" published by the Geological 

 Survey of Canada and in the "Canadian Naturalist and Geologist." 

 Sir Wm. Logan, B. Billings, James Richardson, J. W. Salter, Walter E.. 

 Billings, T. H. Jones and others besides the present Avriter, have con- 

 tributed several reports and articles bearing upon the stratigraphy and 

 pala'ontology of the district under considei*ation. 



It was the purpose of the present writer to prepare for the Trans- 

 actions of the Eoyal SocieLy an extensive series of classified lists of the 

 fossil organic remains obtained from all the localities examined within 

 the Ottawa Paheozoic Basin, from Montreal Island to Lake Temiscaming. 

 These lists have been carefully prepared, but are deemed rather volu- 

 minous, and accordingly a synopsis of the leading pal^ontological char- 

 acters of the various formations included in the basin are presented, in 

 the hope that they will serve to illustrate the faunas which existed in 

 those old Paht'ozoic seas. It is by no means exhaustive, but will include 

 the leading, best known and more truly characteristic species. 



The geological formations included in the term Ottawa Palœozoic 

 Basin, from which fossil organic remains have been obtained, comprise 

 the following, in ascending order : — 



I. Potsdam, 



II. Calciferous, 



III. Chazy, 



lY. Bird's Eye and Black River, 



V. Trenton, 



VI. Utica, 



YII. Lorraine, or "Hudson River" of some geologists. 



VIII. Niagara. 



