280 C. SCHtJCHERT — LOWER HELDERBERO-ORISKANY FORMATIONS 



Table of the Helderbergian Fauna 



Aspidocrinus scutelliformis Hall. 10559 



" callosus Hall . . 



" digitatu8 Hall. . 



Hadrocrinus polydactylus (Hall) 



Camaroerinus saffordi Hall. 27700 



Lepadocrinus gebhardi (Conrad). 10557, 26023. . 



" n. sp. (Beecher collection) 



SpJiserocystites muttifasciatus Hall 



A nomalocystites cornuius Hall. (May be crustacean). 

 Protaster forbesi Hall 



Annelida, 5 species. 



* Spirorbis laxus Hall. 27847 



CornulUes chrysalis Hall 



cingulatus Hall. 



Arabellites 2 n. sp. (Beecher collection] 



Bryozoa, 89 species. 



Vermipora serpuloides Hall 



" robusta Hall 



11 (?) tortuosa Hall 



Hederella n. sp. (Beecher collection). . 



Chseletes sphsericus Hall 



" proximus Hall 



Monotrypa colliculatus Hall 



" helderbergise Hall 



monticulatus Hall 



Monotrypella arbuscula Hall 



" abruptus Hall 



dera« Hall 



Trematopora {?) corlicosa Hall 



Rhombopora regular is (Hall) 



" ovatipora (Hall) 



canaUculala (Hall) 



" rkombifera (Hall ) . . 



parallela (Hall) 



Diamesopora constricta Hall 



dispersa Hall 



Callopora oppletn Hall 



cellvlom Hall 



perelegans Hall 



[Callotrypa) macropora Hall., 

 var. signata Hall . 

 heteropora Hall . . 

 unispina Hall. . . . 



s/nata Hall 



oculifera Hall... 



( Tiilotrypa venusta (Hall) 



mediopora Hall 





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