516 NEW YORK STATE MUSEUM 



Rafinesquina alternata, Emmons sp. 



Modiolopisis anodontoides, Conrad sp. 



M, nuculiformis, Hall 



Cleidoplioruis planulatuSj Hall 



Lyrodesma poststriatum, Emmons 



Archinacella patelliformis, Ball sp. 



Oonularia (Sphenotliallus, Ball) sp. 



Oameroceras proteiforme, Hall sp. 



Lepidocoleru's jamesd, Hall and Whitfield sp. 



TriartliTOs becki, Green 



Trinu'cleus concentricue, Eaton 



This fauna is undoubtedly, as determined by Hall, an eastern 

 representative of the Lorraine fauna, or more exactly, as pointed 

 out by Waicott, of the lower division of the Lorraine beds, viz, 

 the Frankfort slates. 



Station 2. Block island, Cohoes 



Another typical Lorraine fauna was found a little farther north- 

 east on Block island, a picturesque steep cliff rising from the 

 rocky bed of the northern branch of the Mohawk below Cohoes. 

 Along the eastern wall, besides graptolite shales with D i p 1 o - 

 graptus foliaceus and a few specimens of D. putillus, 

 a stratum of fossiliferous mudstone is exposed over a consider- 

 able area. This furnished : 



Heterocrinus heterodactylus_, Hall, Stems and points, cc* 



Sagenella sp. on Endoceras. r 



Crania sp. r 



Platystrophia biforata, Schlotheim sp. r 



Cyrtoliteis ornatus, Conrad, c 



Archinacella patelliformis, Hall sp, Smooth variety, c 



Modiolopsis faba. Hall, c 



Modiolopsis ? nuculiformis, Hall, c 



Cleidophorus planulatue, Hall, cc 



Lyrodesma poiststriatum, Emmons sp. Lorraine form, c 



L. pulchellum, Hall, c 



^r=rare, rr=very rare, c=common, cc=very common. 



