TRENTON CONGLOMERATE OF RYSEDORPH HILL 



93 



Frequency and vertical range of species {continued) 





Gray 

 lime- 

 stone 



Redalsh 

 gray 

 lime- 

 stone 



Black 

 lime- 

 stone 



N. Y. 



Canada 



West 



f 



Other regions 



D, subaequata var. pervetus 

 Conrad 



c 



r 

 r 



c 

 c 

 r 







T ? 



T 

 B-U 



B-T 

 B-T 



T 

 B-T 



Lo-B 



Lo-T 

 T 



Lo't" 



Lo-B 



B-T 

 T 



Lo-T 

 Lo-T 





Dinorthis pectinella Emmons 

 sp. 









Parastrophia liemiplicata Hall 

 Protozyga exigua Sail 









BafBln Land 

 Lake "Winnipeg 



Zygospira recurvirostrls Hall 









Modiolopsis aviculoides Hall.. 









"Whitella ventricosa Hall sp. . . 

 Ctenodonta sp. indet 





rr 

 rr 

 r 



r 



r 

 r 

 r 



T 



■ 'JC2 





C. cf. astartaef'ormis Salter 















Protowarthia cancellata Hall 

 sp 







T-L 



T 

 T 

 T 

 Lo 

 B-T 

 Tbase 

 T 



Lo-T 



T-L 

 Lo-T 



BR 





Conradella compressa Conrad 

 sp 



r 

 c 

 c 

 c 



r 





Carinaropsis carlnata Hall. . . . 





Lophospira bicincta Hall sp. .. 

 L. perauguiata Hall sp 



Lo-T 

 Lo'-T' 



Lo-T 



Lo 



Lo-T 





Liospira americana Billings sp. 

 L. subtilistriata Hall sp 





rr 



Baffin Land 



cc 

 c 



c 





Clathrospira subconica Hall. . . 







Lo-L 

 Lo-T 



Lo-R 

 Lo-T 





Trocbonema umbiJicatum Hall 

 spv 







Baffin Laud 



Eccyliopterus spiralis ip. nov.. 





rr 

 rr 



Cyrtospira attenuata sp. nov... 



rr 

 rr 





T 





T 





Hyolithes rhine sp. nov 







........ 









Conularia trentonensis Hall. . . 





rr 



T 

 T 

 T 

 T 



T 



"Lo-t" 

 Lo-T 

 Lo-T 



T 



Lo-T' 

 B-T 



B 





Spyroceras bilineatum Hall ap. 

 S. cf, anellum Conrad sp.. 



? 

 r 

 rr 













Cyrtoceras subanuulatum Hall 









Zitteloceras hallianum d'Or- 

 bigny sp 





rr 

 cc 



rr 



cc 

 cc 





Tretaspis reticulata sp. nov... 







cf. Tretaspis 



Europe 



cf. Tretaspis 



Europe 



cf. Ampyx ros- 

 tratus iSars. of 

 Europe 



T. diademata sp.nov 













Ampyx (Lonchodomas) hasta- 

 tus sp. nov 





r 



r 

 rr 



r 









Eemopleurides linguatus sp. 

 nov. 



rr 

 cc 









R. tumidalus sp. nov 











Isotelus maximus iocAe 



Gerasaphes ulrichana Clarke 

 sp.. 



c 



B-L 



T-L 



TR 



Lo-U 

 T 



Lo 



Baffin Land 

 Europe 



lUaenus americanus Billings.. 

 Thaleops ovata Conrad 



c 

 r 



c 



Lo-T 



T 

 Lo 



Baffin Land 

 Europe? 



Cyphaspis matutina sp. nov... 





r 

 rr 

 rr 







Bronteua lunatus Billings 







"t-l" 



T 

 T 



T 

 T 



T 

 T-L 



T 

 T-R 





Calymmene senaria Conrad... 









Pterygometopus eboraceus 

 Clarke 



r 

 c 



c 

 c 



rr 

 c 

 cc 







P. callicepbalus Hall 



r 



c 



c 



T 



Lo-L 

 T 



Lo-T 



Lo-T 

 T 





Ceraurus pleurexanthemus 

 Oreen sp . . 





Dalmanites acbates Billings... 





Sphaerocoryphe major sp. nov. 





r 



Lake Winnipeg ? 



Cybele sp 









Leperditia f'abulites Conrad... 







Lo-T 



Lo-f"? 



Lo 





L. resplendens sp. nov 



c 

 r 

 cc 







Isocbilina armatat;ar. pygmaea 



r 









Isoch. armata 

 Lo-B of N. Y. 



Sch. crassini Lo. 

 in west 



Schmidtella crassimarginata 

 var. ventnlabiata var. nov... 











Prlmitia mundula var. jonesi 

 var. nov. ' 





r 









