144 NEW YORK STATE MUSEUM 



The same layer occurs in the bed of Cayuga creek below the 

 upper carriage bridge, about half a mile southwest from the out- 

 crop in Plumbottom creek. Large slabs of this rock are found on 

 the banks of the stream just below the upper bridge and have 

 been apparently lifted out by frost and ice action, but belong 

 below the exposed limestone which here forms a small fall with 

 a pool 4 or 5 feet deep at its base. The lowest layer of limestone 

 evidently corresponds to bed I (see below). Above this are two 

 layers of limestone, the lower 11 and the upper 7 inches thick 

 and still farther up the stream is a bed which corresponds to bed 

 V of the Plumbottom creek section. 



The fossils from the lowest bed, Cayuga creek, are of the same 

 species as those of the following list from Plumbottom creek, 

 with the addition of Panenka lincklaeni. 



Chonetes mucronatus Hall r 



Strophalosia truncata (Hall) cc 



Liorhynchus limitare (Vanuxem) cc 



Tropidoleptus carinatus (Conrad) r 



Ambocoelia nana Graoau cc 



Nuculites nyssa Hall rr 



N. triqueter Conrad r 



Lunulicardium fragile Hall r 



Aviculopecten exacutus Hall rr 



Styliolina fissurella (Hall) cc 



Orthoceras subulatum Hall rr 



Goniatites ? rr 



Isochilina (?) fabacea Jones rr 



E 12 inches. The bed which immediately underlies the lime- 

 stones is a gray calcareous shale abounding in Orthoceras 

 subulatum and Chonetes scitulus. At certain 

 levels of the rock aire apparently current accumulations of 

 crowded and broken shells of Lunulicardium fragile. 

 The rock splits irregularly into thin layers. 



