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NEW YORK STATE MUSEUM 



These upper beds occasionally carry the fossils of the Casha- 

 qua shale, but in no place are they of frequent occurrence except 

 occasionally in replaced condition in the calcareous concretions. 

 Toward the more sandy middle and upper portions of the series 

 plant remains are not infrequent and from these beds has been 

 obtained a Lepidodendron of commanding proportions, taken 

 from a horizon at the mouth of Grimes gully, Naples, 74 feet above 

 the Khinestreet shales. The specimen when taken out measured 

 15 feet in length from the root upward. 



Exposures of these beds are found throughout the Naples 

 valley and constitute the entire lower part of Hatch hill, in the 

 Tannery gully just south of Naples and in the Grimes gully on 

 the west side, also in the higher parts of the Caulkins, Parrish, 

 Hoecker and Lincoln gullies and in all accessible ravines of the 

 Naples and southern parts of the Middlesex valley. Along Can- 

 andaigua lake they are seen in the upper parts of the deeper 

 ravines on the west side, south of the Academy tract, in Bris- 

 tol valley in the upper parts of all the ravines between Boswells 

 Corners and Bristol Center and in the Honeoye valley just west 

 of the sheet between Hunts hollow and the Briggs gully. 



Grimes sandstone 



Compact or laminated, light bluish gray sandstones in layers 

 4 inches to 3 feet thick, separated by hard, blue gray shales. 

 In the vicinity of the Tannery gully, ^ mile south of the village 

 of Naples, a part of the sandstone is highly calcareous owing 

 to the presence of masses of molluscan shells, mostly in 

 comminuted condition. Thickness about 50 feet. In the face 

 of the precipice at the third falls of the Grimes gully and ex- 

 posed in the escarpment on the east side of the ravine 10 feet 

 above the water, is a thin layer of soft shall' which has been 

 found to contain B u c h i o 1 a r e t r o s t r i a t a , M a n t i c o- 

 ceras pattersoni, Bactrites and other typical members 

 of the Naples fauna. This is its highest appearance in this sec- 

 tion. Twenty-four feet higher and feet below the crest of the 

 falls occurs the Grimes sandstone which bears a brachiopod fauna 

 with Liorhynchus, Atrypa reticularis, Productella, 



