86 THE HABITAT OF THE EURYPTERIDA 



Coral — Favosites sp. 

 Aster oidea — Palasterina sp. 

 Crinoids — fragments 

 Brachiopods — 



Lingula lewisi 



L. symondsi 



Strophomena walmstedti 

 Gastropods — Euomphalus rugosus 

 Cep halo pods. 



Orthoceras angulatum 



Gomphoceras ellipticum 

 Conulariida — Tentaculites tenius 



Conularia monile 



C. sowerbyi 



C. sp. 

 Problematic — Nidulites favus. 



Shawangtjnk Fauna or Eastern North America. 



Eurypterids. 



Dolichopterus otisius 



D. stylonuroides 

 Eurypterus maria 

 Eusarcus cicerops 

 Ffughmilleria shawangunk 

 Pterygotus globiceps 

 Stylonurus cestrotus 



S. myops 



No associated organisms 

 Pittsford Fauna of New York. 



Eurypterids. 



Eurypterus pittsfordensis 



Hughmilleria socialis 



H. socialis var robusta 



Pterygotus monroensis 



Stylonurus (Ctenopterus) multispinosus 



Crustacea. 



Ceratiocaris praecedens 

 Emmelezoe decora 

 Pseudoniscus roosevelti 

 Fossils in dolomite partings but not in the black shales and not associated with 

 the eurypterids. 



Genera 



Graptolitida i 



Annelida (denticles) 3 



Brachiopoda (Lingula) '. . 1 



Pelecypoda (Pterinea cf. emacerata) 1 



Cephalopoda (Orthoceras and Gomphoceras) 2 



Ostracoda (Leperditia scalaris) 1 



