290 C. SCHUCHERT — LOWER HELDERBERG-ORISKANY FORMATIONS 



Table of the Oriskanian Fauna 



S3 

 OL 

 OS 

 13 



O 



a 



c 



Diaphorostoma affinis (Billings) , 



" ventricosa (Conrad) , 



" turbinate (Hall) 



Slrophostylus matheri Hall 



transversus Hall 



" (?) cancellatus Meek and Worthen. 



" expanms Hall 



" andrewsi Hall , 



Qyrtolites (?) expanms Hall 



Murchisonia hebe Billings 



Loxonema subattenuata Hall 



Pleurotomaria voltumna Billings 



delta Billings. 



lydia 



Billings. 



Pteropoda, 4 species. 



Conularia lata flail 



Tentaculites elongatus Hall. 



arenosus Hall. . 



" acuta Hall. 



x 



Cephalopoda, 1 species. 

 Orthoceras arenosum Hall 



Crustacea, 11 species. 



Homalonotus major Whitfield 



vanuxemi Hall. 



Phacops cristata Hall , 



" cristata pi pa Hall 



(Acasle) anceps Clarke 



Dalmanites phacoptyx Hall 



(Chasmops) anchiops (Green) 



" (Odontocheile) pleuroptyx (Green) 



Pratius crassimarginatus Hall 



" phoeion Billings 



Acidaspis tuberculatus Conrad 



x x 



rz 



158 



54 



