113 



Megaphytum McLeai, Caulopteris insignis, Wortheni, Trigonocarpum 

 juglans, rostellum, Carpolithes multistriatus , Jacksonensis cistula, fas- 

 ciculatus, Cyathocrinus sanganomensis , Zeacrinus discus und crassus, 

 Erisocrinus fcypus, conoideus, tuberculatus, Productus nanus , Syntrie- 

 lasma semiplicata Hall, Aviculopecten coxanus, pellucidus, Konincki 

 interlineatus, occidentalis Shum, Streblopteria tenuilineata, Eumicrotis 

 Hawni, Pterinea gibbosa, Myalina Swallowi, meliniformis, recurvirostris, 

 Edmondia unioniformis, Pleurophorus subcostatus, Solenomya radiata, 

 Pleurotomaria subconstricta, speciosa, scitula, brazoensis, tenuicincta, 

 granulostriata, Prattenanus, subsinuata, turbiniformis, subscalaris tu- 

 mida, Straparolus umbilicatus , Naticopsis nana und nodosa Macrochei- 

 lus medialis, intercalaris, Polypkemopsis inornata, nitidula, peracuta 

 Loxonema scitula, rugosa, multicostata, cerithiformis, Orthonema Salteri 

 Turritella Stevensana, Soleniscus typicus, Bellerophon crassus, Nautilus 

 planorbiformis sangonomensis, Cyrtoceras curtum, dilatatum, iowensis, 

 Spirorbis carbonarius, Bellinurus Danae, Acanthotelson Stimpsoni und 

 inaequalis, Palaeocaris typus, Anthrapalaemon gracilis, Anthracerpes ty- 

 pus, Palaeocampa anthrax, Palaeoniscus peltigerus, Rhizodus occiden- 

 talis, Cladodus gracilis, Diplodus latus und compressus, Petalodus de- 

 structor, Ctenoptychius semicircularis, Chomatodus angulatus, Helodus 

 carbonarius, Sandalodus carbonarius, Deltodus angularis, Edestus minor, 

 Drepanacathus anceps, Petrodus occidentalis und acutus, Amphibanus 

 grandiceps. 



4. Die untersilurische Formation lieferte a. in der Trenton- 

 gruppe: Comarocystites Shumardi , Modiolopsis modioliformis, ortho- 

 nota, Vanuxemia dixonensis, Orthoceras Backii, Lichas cuculus. 



b. In den Galena beds: Receptaculites globularis Hall, Oweni 

 Hall, Chaetetes petropolitanus Pand, Lingula quadrata Eichw, Ambo- 

 nychia intermedia, Tellinomya ventricosa Hall, alta Hall, Cypricardites 

 obliquus, Bellerophon platystoma, Opkileta Owenana, Trochonema um- 

 bilicata Hall, Raphistoma lenticularis Conr, Murchisonia bicincta Hall, 

 Orthoceras anellum Hall, Illaenus taurus Hall, crassicauda Wahlb. 



c. In der Cincinnati group: Heterocrinus crassus, subcrassus 

 Hybocrinus incurvus, Porocrinus crassus und pentagonius, Dendrocrinus 

 oswegoensis, Strophomena unicostata, Megaptera Casei, Dolabra sterlin- 

 gensis, Cyrtolites imbricatus, Tentaculites tenuistriatus, oswegoensis, ster- 

 lingensis. 



5. Als ober silurisch werden aufgeführt a. aus der Niagara group: 

 Astylospongia Christiana, Paceolus dactylioides Ow, Saccocrinus Christyi 

 Hall, Hemipronites subplanus Conr, Obolus Conradi Hall, Centronella 

 Billingsana, Pterinea Thebensis, Ambonychia acutirostris Hall, Amphi- 

 coelia neglecta, Pleurotomaria Casei, cyclonemoides, Subulites brevis, 



Dalmanites Danae. 



b. Aus der untern Helderberg group: Striatopora missurien- 



sis, Edriocrinus poecilliformis Hall, Orthis hybrida Swb, subcarinata 

 Hall, Strophomena cavumbona Hall, Meripa laevis Van, Zygospira sub- 

 concava, Trematospira imbricata Hall, Cyrtina Dalmani Hall, Spirifer 

 Bd. XXXIII, 1869. 8 



