EARLY DEVOXIC HISTORY OF NEW YORK AXD EASTERN NORTH AMERICA I \"] 



Crustacea 



CV Dalmanites (Synphoria) stemmatus Clarke 



C D. (S.) stemmatus var. convergens Clarke 



SW D. dentatus Barrett 



V D. pleuroptyx Green 



C D. phacoptyx Hall & Clarke 



C D. bisignatus Clarke 



C D. emarginatus Hall 



W D. sp. 



C Phacops correlator Clarke 



CV P. logani Hall 



SW P. sp. 



SW Homalonotus vanuxemi Hall 



V H. major Whitfield 



C H. sp.} 



CV Proetus conradi Hall 



C Cordania becraftensis Clarke 



C C. hudsonica Clarke 



C Cyphaspis minuscula Hall 



C Ceratocephala tuberculata (Conrad) 



C Lichas cf. pustulosus Hall 



CW Beyrichia sp. 



V Isochilina sp. 



W Leperditia sp. 



C Plumulites 



Cephalopods 



VW Orlhoceras 



Pteropods 



W Hyolithus centennialis Barrett 



S Conularia pyramidata jervisensis Shimer 



H C. lata Hall 



C C. sp. 



Gastropods 



C Tropidocyclus brevilineatus (Conrad) 



C T. rotalinea ( Hall) 



C Phragmostoma nitela Clarke 



C . . . . Bellerophon sp. 



