GEOLOGY OF THE HONEOYE-WAYLAND QUADRANGLES 13 



Pterinopecten dignatus Hall 

 Nuculites triqueter Conrad 

 Modiomorpha cf. subalata (Conrad}'' 

 Liorhynchus limitare Vanuxem 

 Productella spinulicosta Hall 

 Strophalosia truncata Hall 

 Orbiculoidea minuta Hall 

 Styliolina fissurella Hall 

 Reptaria stolonifera Rolle 



SKANEATELES SHALE 



This formation is a bed of soft dark clayey shales quite bitumi- 

 nous and pyritiferous in some parts and containing fossils but 

 sparingly, though a few thin calcareous lentils are composed almost 

 entirely of compressed shells. 



It is 145 feet thick and is terminated at the top by a stratum of 

 hard calcareous sandy shale containing cyathophylloid corals in 

 abundance. 



Skaneateles shale is exposed along Little Conesus creek below 

 the Avon reservoir, but is not seen elsewhere on these quadrangles.- 



Its place in the Livonia shaft section is 608 to 753 feet below the 

 top. 



The following fossils occur in these beds : 



Phacops rana Green 

 Cryphaeus boothi Green 

 Tornoceras uniangulare (Conrad) 

 Orthoceras exile Hall 







Gomphoceras sp. 

 Pleurotomaria rugulata Hall 

 Bellerophon leda Hall 

 Pterochaenia fragile (Hall) 

 Liopteria laevis Hall 

 Panenka equilatera Hall 

 Palaeoneilo fecunda Hall 

 Orthonota undulata Conrad 

 Chonetes scitulus Hall 

 C. lepidus Hall 

 C. mucronatus Hall 

 Liorhynchus multicostum Hall 

 L. limitare (Vanuxem) 

 Styliolina fissurella Hall 

 Crinoid stems 



