350 PALEOZOIC ROCKS OF THE HUDSOX BAY REGIOX 



Thickness 



in feet 



on the east side of the river at the rapids, and exposed 

 in the upper part of the bluff 1 to 2 miles farther down 

 the river : the fossils liste<l below occur in the lower 

 part: 23 



Zaphrentis sp. 



Streptelasma latuscuht var. trUohata. 



Paleofa rosites cf. aspcra. 



Paleofavosites sp. 



Hall/sites sp. 



Calapcecia cf. canadensis. 



titropliomcna cf. lata. 



Strophomena tetrastriata. 



Rafinesquina alteniata. 



Pic eta mhon ties sericeus. 



Dinorthis cf. suhquadrata. 



Rhifuchotrema near capai: ' 



Trochonema cf. umMlkatum. 



Trochonema sp. 



Holopea media. 



Hormotoma acuminata. 



Hormotoma sp. 



Actinoceras sp. 



Cj/rtoceras sp. 



CycJoceras oJonts var. Ijaffinense. 



Isotelus sp. 



Busmastus sp. 



Leperditia sp. 

 Limestone, gray, in rather thin layers, somewhat mottled 

 with brown dolomitized areas : a zone of numerous gas- 

 tropods (Trochonema. etcetera) present in the lower 

 part : exposed in both banks of the river 2 or .3 miles 

 below the rapids and also 4 miles above the rapids, 

 where an arch of the strata brings this horizon above 

 the level of the water : containing the fossils listed 

 below : , 15 



Crrionites sp. 



Zaphrentis sp. 



Streptelasma latuscula var. trilohata. 



Streptelasma sp. 



Columnaria near alveolata. 



Columnaria calicina. 



Paleofavosites cf. aspera. 



Paleofavosites sp. 



Calapfpcia canadensis. 



Halt/sites catenulatus. 



Hall/sites sp. 



Dinoholus sp. 



Schizocrania sp. 



