352 



New York State Museum 



Silurian Fossils 



GRAPTOLITES 



Monograptus clintonensis (Clint.*) 



GASTROPODS 



Bucanella trilobata (Med.-Lock.) 

 Coelidium macrospira (Glph) 

 Diaphorostoma niagarense (Niag.) 

 Euomphalus fairchildi (Glph) 

 Holopea pervetusta (Man.) 

 Platyceras niagarense (Niag.) 

 Trematonotus alpheus (Glph) 



PTEROPODS 



Tentaculites gyracanthus (Man.) 



CEPHALOPODS 



Kionoceras darwini (Glph) 

 Phragmoceras parvum (Glph) 

 Trochoceras costatum (Glph) 



CYSTOIDS, CRINOIDS 



Caryocrinus ornatus (Roch. sh.) 

 Eucalyptocrinus crassus (Niag. of Ohio, 



Ind., 111.) 

 Ichthyocrinus laevis (Roch. sh.) 



TRILOBITES 



Arctinurus (Lichas) boltoni (Roch.-sh.) 

 Bumastus (Illaenus) ioxus (Niag.) 

 Calymene niagarensis (Niag.) 

 Dalmanites limulurus (Niag.) 

 Homalonotus delphinocephalus (Niag.) 



OSTRACODS 



Leperditia scalaris (Sal., Cobl.) 



EURYPTERID 



Eurypterus remipes (Bertie w.l.) 



WORM TRAIL 



Arthrophycus alleghaniensis (Med.) 



* Clint. = Clinton; Cobl. = Cobleskill; Glph. = Guelph; Lock. = Lockport; Man. = Manlius; 

 Med. = Medina; Miss. = Mississippian; Niag. = Niagaran; Ord. = Ordovician; Roch. = 

 Rochester; Sal. = Salina; Sil. = Silurian. 



Enterolasma caliculum (Niag.) 

 Favosites niagarensis (Niag.) 

 Halysites catenulatus (Sil; Niag., etc.) 

 Palaeocyclus rotuloides (Up. Clint., Niag., 



etc.) 

 Syringopora retiformis (Niag.) 



BRYOZOANS 



Fenestella elegans (Roch. sh.) 

 Hallopora elegantula (Niag.) 

 Lichenalia concentrica (Roch. sh.) 



BRACHIOPODS 



Atrypa nodostriata (Clint., Lock.) 

 Leptaena rhomboidalis (Ord.-Miss.) 

 Lingula cuneata (Med.) 

 Monomorella noveboracum (Glph) 

 Orthis flabellites (Niag.) 

 Pentamerus oblongus (Niag.) 

 Rhynchotreta cuneata americana (Lock.) 

 Schuchertella interstriata (Cobl.) 

 Spirifer niagarensis (Niag.) 

 Spirifer vanuxemi (Man.) 

 Whitfieldella sulcata (Cobl., Man.) 



PELECYPODS 



Leiopteria subplana (Roch. -Glph) 

 Modiolopsis primigenia (Med.) 

 Orthodesma curtum (Clint.) 

 Pterinea emacerata (Clint., Lock.) 



