CANANDAIGUA AND NAPLES QUADRANGLES 



45 



Stafford limestone 



We have shown in papers relating specially to this deposit^ that 

 its very extensive fauna is that of the Skaneateles, Canandaigua 

 and Moscow shales in unusually favorable development. It was 

 the first appearance in this region of that fauna, but for western 

 New York as a whole, the second invasion of this Hamilton fauna 

 from the west into the Appalachian basin. For a full account 

 of the formation and its contents where best developed, refer- 

 ence is made to the papers cited and to Elvira Wood's discussion 

 of the fauna of the Stafford limestone at Lancaster, Erie co. 

 [Bui. 49, p.l39]. The absence of outcrops of the rock over the 

 area of this map restricts the representation of its fauna to 

 such species as are to be found in the loose blocks, but the fol- 

 lowing is a list of the species which may be expected from the 

 formation. 



Undetermined plates and scales of 



fishes 



Worms 

 Spirorbis 



Crustaceans 



Homalonotus dekayi Qreen 



Phaeops rana Qreen 



Cryphaeus boothi Green 



C. boothi var. calliteles Green 



Proetus macrocephalus Hall 



Cyphaspis eraspedota Hall d Clarke 



Primitiopsis punetulifera Hall 



Cephalopods 



Nautilus liratus Hall 

 N. cf. magister Hall 

 Nephriticeras bucinum Hall 

 Orthoceras subulatum Hall 

 O. aegea Hall 

 O. marcellense Vanuxem 

 O. fenestrulatum Clarke 

 O. stafifordense Clarke 

 O. eriense Hall 



Pteropods 

 Tentaculites gracilistriatus Hall 

 Styliolina fissurella Hall 



Gastropods 

 Platyeeras attenuatum Hall 

 P. bucculentum Hall 

 Oyrtolites mitella Hall 

 Bellerophon lyra Hall 

 Diaphorostoma lineatum Conrad 

 Pleurotomaria lucina Hall 

 P. rugulata Hall 

 P. itys Hall 

 P. eapillaria Conrad 

 P. sulcomarginata Conrad 

 Loxonema hamiltoniae Hall 

 Onychochilus nitidulns Clarke 



LamelUhrancUs 

 Pterinopeeten exfoliatus Hall 

 Actinopteria muricata Hall 

 Liopteria laevis Hall 

 Cyprieardinia indenta Conrad 

 Panenka mollis var. eostata Hall 

 P. radians Conrad 

 Pterochaenia fragilis Hall 



Brachiopods 

 Terebratula lincklaeni Hall 

 Cryptonella planirostris Hall 



'N. Y. State Geol. 8th An. Rep't. 1889. p.0O; and N. Y. State Mus. Bui. 

 49. 1901. p.130. 



L 



