FOSSILS FROM THE OMSK ANY 



Table of the Oriskanian Fauna 



295 



'a; 



Pelecypoda, 23 species. 



Megambonia obscura Hall 



Aviculopecten gebhardi (Conrad). . . 



" recticosta (Ball) 



Actinopteria textilis Hall 



textilis armaria (Hall). 



Megambonia bellistriata Hall 



" lamellosa Hall 



Palseopinna flabellum Hall 



Plerinea flabellum (Conrad) 



Cypricardinia planulata (Conrad). . 



indenta ( Conrad ) . . . . 



Cypricardinia mblamellosa Hall?. . 



distincta Billings. . . . 



Sanguinolites tethys Billings 



Goniophora mediocris Billings 



Mytilarca canadensis Billings 



nilida Billings 



Leplodomus canadensis Billings. . . . 

 percingulaius Billing* . 



mainensis Billings 



pembrokensis Billings.. 

 Anodontopsis ventricosa Billings. . . 

 Conocardium trigonale (Phillips). . , 



Gastropoda, 28 species. 



Bellerophon plenus Billings 



curvilinealus Conrad. 

 Platyceras nodosum (Conrad) 



caUosum Hall 



subnodosum Hall 



gebhardi Conrad 



tortuosum Hall 



magnificum Hall 



palulum Hall 



reflexum Hall 



ventricosum Conrad. . . , 



carinalum Hall , 



concavum Hall 



denialium Hall 





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Beechia suessana Hall ? 



Oriskania navicella Hall and Clarke 



Megalanteris ovalis Hall 



Centronella glansfagea Hall 



tumida Billings 



' ' alveata Hall 



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