366 PALEOZOIC ROCKS OF THE HUDSON BAY REGION 



Thickness 

 in feet 

 Zaphrentis patens. 



Favosites favosus. 



Favosites sp. 



Syringopora Mfurcata. 



Halysites catcnulatus. 



Stropheodonta acanthoptera. 



Stropheodonta cf. philomela. 



Stropheodonta sp, 



Orthis cf. flahelUtes. 



Dalmanella elegantula. 



Camarotoechia ekwanen.sis. 



Cf. Camarotoechia coalescens. 



Camarotoechia f winiskensis. 



Atrypa cf. reticularis. 



Euomphalus rotundus. 



Tentaculites sp. 



Leperditia hisingeri var. 

 2. Limestone, gray, fine grained, thin bedded, containing 

 Trimerella ekwanensis and several species of gastro- 

 pods near the base; well exposed in the south bank 

 of the river at the Upper Rapids and at the rapids 

 next below ; containing the following fossils : 15 to 20 



Streptelasma pygmwum var. occidentale. 



Streptelasma sp. 



Favosites favosus. 



Syringopora Mfurcata. 



Halysites catenulatus. 



Lyellia sp. 



Trimerella ekwanensis. 



Stropheodonta acanthoptera. 



Stropheodonta sp. 



Orthis cf. flal)ellites. 



Bellerophon sp. 



Hormotoma tvhiteavesi. 



Phanerotrema occidens f 



Euomphalus rotundus. 



Euomphalopterus cf. tyrrelU. 



Strophostylus fllicincta. 



Actinoceras keewatinensis. 



Actinoceras sp. 



Tsochilina grandis var. latimarginata. 

 A gap in exposure 



1. Limestone, buff, fine grained, dolomitic, in places mud 

 cracked : without fossils ; exposed in the south bank 

 of the river between Matateto and Crooked rivers . . 6 to 8 



From the study of fossils collected by Wilson/^ "Whiteaves has shown 



1° W. .T. Wilson : Report on geology of Algoma and Thunder Bay districts. Geo!. Sur- 

 vey of Canada, 1909, pp. 37 ft. 



