120 THE ROYAL SOCIETY OF CANADA 



List of Palœozoic fossils in the McGill University collection, showing nm 



structures in silica. 



Horizon. Locality 



Ctenodonta nasuta Black River Paquette's Rapids, Qih 



Streptelasma profunda " " 



Stromatocerium rugosum " " 



Maclurea logani. " " 



Murchisonia gracilis Trenton /' 



Stromatoporoid " << 



Pleurotomaria " " 



• Halopea " Lake St. John, Que. 



Orthoceras " . " 



Orthoceras bigsbyi " Ottawa, Ont. 



Discoceras conoides. . . . Silurian L. Timiskaming, Ont. 



Syringopora " " 



Halysites catenulatus. . " . " 



Favosites favosa " " 



Strotnatoporoid " " 



Atrypa reticularis " " 



Strombodes typus Niagara Manitoulin I., Ont. 



Halysites catenulatus . . " " 



Diphyphyllum multicaule " " 



Heliolites macrostylus. . " " 



Heliophyllum " << 



Lyellia americana " '» 



Strombodes pygmseus. . " " 



Halysites ;> 



Caryocrinus ornatus . . . Rochester Perry and Decatus Cascade. 



^, . . Tenn. 



1 hecia major Niagara Louisville, Ky. 



Favosites favosa U. Silurian Drummond, Ind. 



Streptelasma sp U. Helderberg Columbus, Ohio. 



Rennsellariasuessiana.. Oriskany Cumberland, Md. 



Platyceras ventricosa . . " " 



Michelinia convexa. . . . Corniferous Ontario. 



Spirifer euryteines Hamilton Clark Co., Ind. 



" granulifera " Watson, Clark Co., Ind. 



Cladopora dichotoma . . " Falls, Ohio. 



