GEOLOGY OF THE HONEOYE-WAYLAND QUADRANGLES 21 



Fossils are very rare here. The softer shales in the lower beds 

 contain a few forms like those found in the Cashaqua. The 

 sandier beds are quite barren except of plant remains. The col- 

 lector may expect to find: 



Manticoceras pattersoni (Hall) 

 Probeloceras lutheri Clarke 

 Lunulicardium ornatum Hall 

 Honeoyea desmata Clarke 

 Buchiola retrostriata (v. Buck) 

 Palaeotrochus praecursor Clarke 

 Bactrites 



GRIMES SANDSTONE 



This formation is composed principally of even layers of sand- 

 stone from six inches to three feet thick, some of which are 

 rather soft and shaly, while others are hard and calcareous. The 

 aggregate thickness is not far from fifty feet. 



It appears on the next quadrangle toward the east in the Grimes 

 gully at Naples, where it contains a small brachiopod fauna 

 allied to the Ithaca fauna and other forms not known elsewhere. 



Though these sandstones outcrop in many places on the Way- 

 land quadrangle there are very few good exposures of the entire 

 formation. 



The entire section is shown in the Calabogue ravine below the 

 lower bridge in the village of Conesus. The sandstones are quite 

 barren of fossils except at the top, where a 14 to 16 inch layer 

 is very hard, calcareous and concretionary and contains large 

 irregularly shaped concretions so frequently as to almost form a 

 continuous layer. It bears a close resemblance to a stratum in 

 this horizon in Tannery gully, Naples, and like that one, contains 

 brachiopod shells quite abundantly, but mostly in so fragmentary 

 condition as to preclude identification. 



Entire valves of a small Rhipidomella and Productella 

 spinulicosta occur and loose spines of a larger Productella are 

 abundant. Fragments of Liorhynchus may also be recognized. 



The Grimes sandstones may be seen at the Delaware, Lacka- 

 wanna & Western Railroad culvert in the Culberson gully three 

 and one-half miles north of Dansville, in other ravines and -quarries 

 in the east side of the Canaseraga valley, and on the west side at 

 the mouth of the Bradner creek ravine half a mile northwest of 

 Woodville. 



