REPORT OF THE STATE PALEONTOLOGIST I903 I43 



L. irene Billings 



L. tullia Billings 



Chonetes antiopia Billings 



C. canadensis Billings. Profusely abundant, much more so than 

 at Grande Greve 



C. hudsonicus Clarke. New York Oriskany 



Chonostrophia complanata Hall 



Cyrtina affinis Billings 



Spirifer murchisoni Castelnau. This widely distributed Oriskany 

 species is less abundant here than at Grande Greve 



S. arenosus Con. As S. superbus Billings profusely 

 abundant 



S. dolbeli nov. 



Meristella lata Hall var. complector nov. 



Megalanteris plicata Hall 



Beachia amplexa nov. 



Rensselaeria ovoides Eaton var. gaspensis nov. cf. Oriskany 



Leptocoelia flabellites Conrad. In enormous masses constituting 

 one of the most abundant of all the fossils. World-wide at this 

 horizon 



Actinopteria cf. communis Hall. In the Helderberg and Oriskany 

 of New York 



Megambonia nitidula nov. A small form of the type of M. 

 crenistriata (Oriskany) 



Trochonema canale nov. 



Diaphorostoma perceense nov. of the type of D. v e n t r i- 

 cosum (Oriskany) and D. af fine (Grande Greve) 



Platyceras tortuosum Hall. Oriskany species in New York 



P. argynus nov. 



Tentaculites elongatus Hall. Also in the Oriskany 



T. perceensis nov. 



Dalmanites (Probolium) perceensis nov. This is a really re- 

 markable species both in structure and size. Outside of the 

 Helderberg fauna of New York, it is the only American trilo- 

 bite having the long and forked cephalic snout characterizing 

 the subgenus Probolium (D. nasutus, D. tridens) 



