MARCBLLUS LIMESTONES AND THEIR FAUNAS 131 



Proetus macrocephalus Hall 

 Oyphaspis craspedota Hall dc Clarke 

 Primitiopsis punctulifera Hall 



Cephalopods 

 Nautilus liratus Hall 



N. cf. magister 



Nephriticeras bucinum Hall 



Orthoceras subulatum Hall 



O. aegea Hall 



O. marcellense Yanuxem 



O. fenestrulatum Clarice 



O. staffordense Clarice 



O. eriense Hall 



Pteropods 



Tentaculites gracilisrtriatus Hall 

 Styliolina fieeiurella Hall 



Gastropods 



Plat jeer as attenuatum Hall 

 P. bucculentum Hall 

 Ojrtolites mitella Hall 

 Bellerophon Ijra Hall 

 Diapborostoma limeatum Conrad 

 Pleurotomaria lucina Hall / 

 P. rugulata Hall 

 P. itys Hall 

 P. capillaria Conrad 

 P. sulcomarginata Conrad 

 Loxonema hamiltoniae Hall 

 Onycbochilus nitidulus Clarke 



Lamellibranchs 



Pterinopecten exfoliatus Hall 

 Actimopteria muricata Hall 

 Liopteria laevis Hall 

 Cypricardinia indenta Conrad 



