8 NEW YORK STATE MUSEUM 



In the salt shaft near Livonia on the Honeoye quadrangle the 

 following fossils were found in these beds : 

 Spirifer vanuxemi Hall 

 Stropheodonta varistriata {Conrad) 

 Liopteria rugosa Hall 

 Leperditia alta {Conrad) and a small Favosites 



DEVONIC 



ORISKANY SANDSTONE 



This formation is represented here by eight inches of gray cal- 

 careous sandstone containing no fossils. It is exposed in the rock 

 wall along Hemlock outlet at the dam east of the high school at 634 

 A. T. in Honeoye Falls and also at the south end of the Lehigh 

 Valley Railroad bridge one-half mile northwest of the village. In 

 the Livonia salt shaft there were at this horizon five feet of coarse, 

 green and gray conglomerate containing eight species of brachio- 

 pods, suggestive of a commingling of the faunas of the Oriskany 

 sandstone and Schoharie grit of the eastern part of the State. 

 They are 



Pentamerella cf. arata {Conrad) 



Atrypa reticularis {Linne) 



Orthis cf. propinqua {Hall) 



Hipparionyx proximus Vanuxem 



Stropheodonta sp. 



Pentagonia unisulcata {Conrad) 



Spirifer cf. arenosus Conrad 



ONONDAGA LIMESTONE 



The Onondaga limestone is composed of layers or tiers of blue 

 gray limestone, separated by partings of dark shale or black bitum- 

 inous matter. ■ ; 



Dark chert or impure flint in nodules or nodular layers is un- 

 evenly distributed throughout nearly the entire formation, but is in 

 larger proportion in the lower part, except for an uneven stratum 

 two to five feet thick at the base, which is largely composed of 

 corals and from which chert is absent. 



The cherty lower beds supply the material for the crushed stone 

 used in roadmaking and for ballast, while the basal stratum and 

 the layers clear from chert found in the upper part of the forma- 

 tion furnish an inexhaustible supply of valuable building stone and 

 quicklime. 



