EKAVAN RIVER SECTION 363 



Phanerotrema occidens ? 

 Tentaculites sp. 

 Of. Gtenodonta sul)ovata. 

 Phragmoceras cf. ivhitneyi. 

 Isochilina grandis var. latimarginata. 



EKWAN RIVER SECTION 



Several miles south of the Winisk, along Ekwan River, the higher for- 

 mations of the Silurian limestone are well exposed. The lowest rocks 

 seen along this river outcrop about li/4 .miles above the mouth of the 

 Matateto River, about 115 miles from the bay. Below this locality occa- 

 sional outcrops are encountered down the river for a distance of about 80 

 miles. A detailed section of the strata exposed in the banks of Ekwan 

 River is given below : 



Silurian limestone 

 Niagaran series 



Attawapiskat coral reef '^^n^^e^t^^ 

 7. Limestone coral reef, consisting of domes and ridges 

 of stromatoporoids and coral rock the flanks of which 

 are bordered by layers of fine-grained limestone sim- 

 ilar in character to the reef rock exposed on Lime- 

 stone Island and at the portage farther down the 

 Severn River, with which horizon it corresponds; 

 exposed at the portage at Strong Rapids and for sev- 

 eral miles below this locality ; containing the follow- 

 ing fossils : 30 



Streptelasma sp. 



Diphijphyllum multicaule. 



Cf. Acervularia austini. 



Vesicularia cf. major. 



Pycnostylus elegans. 



Cystiphyllnm niagarense. 



Favosites favosus. 



Favosites Msingeri. 



Favosites cf. occidens. 



Favosites sp. 



Syringopora cf. Mfurcata. 



HelioUtes cf. interstincta. 



Heliolitcs cf. suhtuhulata. 



Aphyllostylus gracilis. 



PJicenopora keeivatinensis. 



Fenestella suharctica. 



Stropheodonta sp. 



Plectamhonites cf. transversalis. 



Orthis cf. fladellites. 



Dalamanella elegantula. 



Gypidula sp. 



