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NEW YORK STATE MUSEUM 



Diaphorostoma lineatum (Conrad) 



Cyclonema hamiltoniae Hall 



C. multilira Hall 



Straparollus rudis Hall 



Murchisonia micula Hall 



Macroehilus hebe Hall 



Lamellibranchs 



Mytilarca oviformis (Conrad) 



Macrodon hamiltoniae Hall 



Microdon bellistriatus Conrad 



Buchiola halli Clarke 



Cypricardinia indenta (Conrad) 



Modiella pygmaea Hall 



Conocardium crassifrons Conrad 



Grammysia arcuata (Conrad) 



Goniophora acuta (Hall) 



Modiomorpha mytiloides Hall 



M. concentrica (Conrad) 



M. macilenta Hall 



Nuculites oblongatus Conrad 



Actinopteria decussata Hall 



Aviculopecten princeps (Conrad) 



Palaeoneilo constricta (Conrad) 



P. emarginata (Conrad) 



P. fecunda Hall 



P. plana Hall 



P. tenuistriata Hall 



Brachiopods 



Lingula leana Hall 



L. densa Hall 



Crania crenistria Hall 



Craniella hamiltoniae Hall 



Rhipidomella penelope Hall 



R. vanuxemi Hall 



Orthothetes arctostriatus Hall 



O. pandora (Billings) 



Stropheodonta concava Hall 



S. demissa (Conrad) 



S. (Douvillina) inequistriata 



(Conrad) 

 S. junia Hall 



Pholidostrophia nacrea Hall 

 Leptostrophia perplana (Conrad) 



Chonetes carinatus Conrad 



C. lepidus Hall 



C. deflectus Hall 



C. scitulus Hall 



Productella navicella Hall 



P. spinulicosta Hall 



P. tullia Hall 



Spirifer angustus Hall 



S. divaricatus Hall 



S. fimbriatus (Conrad) 



S, audaculus (Conrad) 



S. mucronatus (Conrad) 



S. con sobr inns d'Orbigny 



S. marcyi Hall 



S. granulosus (Conrad) 



Ambocoelia umbonata Conrad 



A. praeumbona Hall 



Cyrtina hamiltonensis Hall 



Nucleospira concinna Hall 



Parazyga hirsuta Hall 



Cyclorhina nobilis Hall 



Trigeria lepida Hall 



Meristella haskinsi Hull 



Athyris spiriferoides (Eaton) 



Atrypa reticularis (Linne) 



Camarotoechia dotis Hall 



C. horsfordi Hall 



C. prolifica Hall 



C. sappho Hall 



C. congregata (Conrad) 



Liorhynchus multicosta Hall 



L. quadricostatum (Vanuxcm) 



Pentamerella pavilionensis Hall 



Cryptonella rectirostris Hall 



C. planirostris Hall 



Eunella lincklaeni Hall 



Tropidoleptus carinatus (Conrai 



Crinoids 



Platycrinus eboraceus Hall 

 .Megistocrinus Ontario Hall 

 Nucleocrinus lucina Hall 

 Dolatocrinus glyptus Hall 

 1). liratus Hall 



The following corals were found in the basal limestones : 



Zaphrentis halli Edwards & Haitne C. americanum Edzvards & Hau 



Z. simplex Hall Cyathophyllum robustum Hall 



Cystiphyllum varians Hall C. nanum Hall 



C. conifolle Hall C. conatum Hall 



