MARCBLLUS LIMESTONES AND THEIR FAUNAS 131 



Proetus macrocephalus Hall 

 Cyphaspis craspedota Hall & Clarke 

 Primitiopsis punctulifera Hall 



Cephalopods 

 Nautilus liratus Hall 



N. cf. magister 



Nephriticeras buciuum Hall 



Orthoceras subulatum Hall 



O. aegea Hall 



O. marcellense Vanuccem 



O. feuestrulatum Clarke 



O. staffordense Clarke 



O. erieuse Hall 



Pteropods 



Tentaculites gracilistriatue Hall 

 Styliolina fiseurella Hall 



Gastropods 



Platyceras attenuatum Hall 

 P.» bucculentum Hall 

 Oyrtolites mitella Hall 

 Bellerophtm lyra Hall 

 Diaphoroistoma limeatum Conrad 

 Pleuroitomaria lucina Hall 

 P. rugulata Hall 

 P. itys Hall 

 P. capillaria Conrad 

 P. sulcomarginata Conrad 

 Loxonema hamiltoniae Hall 

 Onychochilus nitidulus Clarke 



Lamellibranchs 



Pteriuopecten exfoliatus Hall 

 Actiniopteria muricata Hall 

 Liopteria laevis Hall 

 C^pricardinia indeuta Conrad 



