92 



NEW YORK STATE MUSEUM 



7 Gray crystalline limestone (continued) 

 Leperditia fabulites Conrad 

 L. resplendens sp. nov. 

 Eurychilina bulbifera sp. nov. 

 E. obliqua sp. nov. 



E. subradiata Vlrich, var. rensselaeriea var. nov. 

 E. dianthus sp. nov. 



Primitia mundula Miller, var. jonesi var. nov. 

 Bollia eornucopiae sp. nov. 

 Macronotella ulrichi sp. nov. 

 M. fragaria sp. nov. 

 Bythocypris cylindrica Hall sp. 



Tabulation of the faunas 



c 



cc 

 r 



IT 



c 

 c 

 r 



rr 

 c 



rr 

 c 



The following tabulation of the organisms of the last three 

 groups of pebbles is given to show the relative frequency of 

 occurrence, and their vertical range in other regions. 



Frequency and vertical range of species 



B=Black river group; Ch=Chazy; D=Dlcellograptus zone (Normans kill shale, Lower Dicello- 

 graptus zone); L=Lorraine beds; Lo=Lowvilie limestone (Birdseye limestone, Stones river group); 

 R=Richmond beds; T=Trenton limestone; D=Utica beds. 



Streptelasma corniculum Hall. 



Diplograptus foliaceus Mur- 

 chUon sp 



Climacograptus scharenbergi 

 Lapworth 



Stomatopora inflata Hall sp. . . 



Stictopora cf. elegantula Hall. 



Callopora multitabulata Ulrich 



Prasopora simulatrix var. ori- 

 entals Ulrich 



Siphonotreta minnesotensis 

 Hall & Clarke 



Crania cf. trentonensis Hall . . . 



Pholidops trentonensis Hall .. 



Rafinesquina alternata Em- 

 mons sp 



R. deltoidea Conrad sp 



Gray 

 lime- 

 stone 



Leptaena rhomboidalis Wilck- 

 ens 



Plectambonites sericeus Sow- 

 erby sp 



P. sericeus var. asper James 



P. pisum sp. nov 



Christiania trentonensis sp. nov 



Triplecia nucleus Hall 



Orthis tricenaria Conrad 



Plectorthis plicatella Hall 



Platystrophia biforata Schlot- 

 heim sp 



Dalmanella testudinaria Hal- 

 man sp , 



cc 



r 



cc 

 r 



Reddish 

 gray 

 lime- 

 stone 



Black 

 lime- 

 stone 



r 



c 



r 



cc 



rr 

 r 



r 



cc 

 c 



N. Y. 



T 



T-L 



D 

 T 

 T 



T 



T 



T-L 



T 



T-Carb 



T-L 

 TIT 



T 

 T 



T 



T-L 



Lo-L 



Canada 



T 



T-U 



D 

 T 



T 



Ch-L 

 T 



Lo-L 



i 



Lo-T 



Lo-T 



Chazv 



-Upp, 



Sil. 



Lo-L 



West 



T 

 T-L 



B-T 



B-T* 



B-T 



Lo 

 T 

 T 



BE 

 T 



T-Carb 



Lo-R 

 U 



Lo-T 

 T-L 

 T-R 



Lo-R 



Other regions 



T of Baffin Land 



T of Manitoba 

 Lake Winnipeg 

 Europe ? 



Europe 



Europe 



Baffin Land 

 Lake Winnipeg 



Baffin Land 

 Europe 



Baffin Land 

 Europe 



