EKWAX RIVER SECTION 365 



Thickness 

 in feet 



Meristina expansa. 



Amhonychia septentrionalis. 



AmltonycMa undulata. 



Ami) onychia sp, 



Mytilarca pernoides. 



Conocardium sp. 



Horomotoma ichiteavesi. 



Strophostylus fllicinctus. 



Orthoceras sp. 



Illcenus sp. 



Bronteus sp. 



Leperditia phaseolus. 

 Ekwan River limestone. 



5. Limestone, gray, fine grained, thinly and irregularly 

 stratified; exposed 7 miles below Flint Rapids and 

 about one mile farther down the river, where a small 

 anticline appears in the river bank; containing few 



fossils 25 



4. Limestone, gray, fine grained, coralline, containing 

 numerous concretions and irregular patches of dark 

 chert and stromotoporoid structures which form 

 domes and irregular masses ; exposed in the bed and 

 banks of the river at Flint Rapids; containing the 

 fossils named below : 15 to 20 



Streptelasma sp. 



Zaphrentis stoJcesi. 



Chonophyllum canadense. 

 • Ptychophyllum cf. stoJcesi. 



Diphyphyllum multicaule. 



Cystostylus infundidulum. 



Cystostylus typicus. 



Aphyllostylus gracilis. 



Tyrrellia severensis. 



Paleofavosites aspera. 



Favosites favosus. 



Favosites hisingeri. 



Alveolites niagarensis. 



Syringopora cf. Mfurcata. 



Balysites catenulatus. 



Euomphalus rotundus. 



Euomphalopterus cf. tyrrelli. 



Actinoceras sp. 



Isochilina grandis var. latimarginata. 

 A. short gap in exposure 



3. Limestone, gray, cherty in the upper part ; exposed in 

 the south bank of the river one mile above Flint 

 Rapids, where the strata dip gently downstream; 

 containing the fossils named below : 12 to 15 



