314 C. SCHUCHERT — LOWER HELDERBERG-ORISKANY FORMATIONS 



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Orthu ( Dalmanella) planiconvexa Hall ... x 



Leptsena rho)nboidalis ventricosa Hall . . . 



Stropheodonta magnified Hall. 281 11 j . . . 



magniventer Hall 



StrophoneHa headleyana Hall. 



Hipparionyx proximus Vanuxem 



Camarolodchia barrandei Hall 



' ; speciosa Hall. ] 0671 



Rhynchonella ramsayi Hall 



Eatonia peculiaris (Conrad). 8434, 10672 



" sinuata Hall .... 



" whitfieldi Hall 



Spirifer arenosus (Conrad). 10664, 28103 



" murchisoni Castelnan. 28097 



" cumberlandise Hall (Syn. 6'. submucronata Hall). 10666, 10667 



1 ' intermedins Hall 



11 «ri6u//« Hall. 10668 



Metaplasia pyxidata Hall 



Cyrtina roslrata Hall 



Rhynchospira rectirostris Hall 



Atrypa reticularis Linne. 8432 



Anoplotheca dichotoma (Hall) 



" fimbriata (Hall) 



" 'ftabellites (Conrad). 10673 



Meristella lata Hall. 28094 



" cfr. princeps Hall 



n. sp. (Gordon collection) 



Rensselaeria cumberlandise Hall 



intermedia Hall 



" marylandica Hall. 10670, 28088 



oroides Hall 



Megalanteris oralis Hall 



Beachia suessana Hall. 8435, 10669 



Centronella f (probably n. gen. et sp., Gordon collection) 



Platyceras callosum Hall 



" gebhardi Conrad. 4201 , 28085 



" magnificum flail. 280X6, 10676 



" patulum Hall 



" reftexum Hall. 28084 



" rnitricosum Conrad. 8431 , 10674 



Diaphorostoma rentricosa (Conrad) 



/Strophostylus andreirsi Hall 



" matJieri Hall 



transversus Hall ... 



Cyrtolites expansus Hall 



TentacalUes (near scalariformis, Gordon collection) 



Actinopterin textilis arenarm (Hall) 



Aviculopccten, 2 or 3 n. sp. (Gordon collection) 



Megambonia lamellosa Hall 



Homaloiiotns vanuxemi Hall 



Dalrnanites, 2 undet. sp. (Gordon collection) 



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