20 NEW YORK STATE MUSEUM 



below Prospect. According to Prosser and Cumings the list of 

 £0ssils includes: 



1 Monticulipora (Prasopora) lyco- lo Plectambonites sericeus (Sow.) 



perdon (Say) H. & C. 



2 Escharopora recta Hall 1 1 Zygospira recurvirostra Hall 



3 Trematis terminalis (Emmons) 1 2 Asaphus platycephalus Stokes 



Hall 13 Calymmene callicephala Green 



4 Rafinesquina alternata (Con.) 14 Ceraurus pleurexanthemus Green 



H. & C. 15 Leperditia fabulites Con. 



5 R. alternata t;ar. nasuta Cow. 16 Endoceras proteiforme Hall 



6 R. deltoidea (Con.) H. & C. ' 17 Orthoceras sp. 



7 Strophomena cf. scofieldi Winch. 18 Bellerophon bilobatus (Sowerhy) 



& Schuch. 19 Dendrocrinus gracilis (Hall) 



8 Orthis (Platystrophia) biforata 20 Murchisonia gracilis ( if aZZ) 



(Schl.) Bill. 21 Stictopora c/. acuta Hall 



9 O. (Dalmanella) testudinariaPaL 22 Crinoid segments 



Highly contorted strata between undisturbed strata may be seen 

 between the lower and upper portion of High fall, and also along 

 the footpath especially opposite the crest of High falls. These 

 phenomena will be discussed later under a separate heading. 



Another Trenton section ranking next in importance to the one 

 just described is that at Gravesville and extending from the village 

 for more than a mile up Mill creek. A thickness of nearly 200 feet 

 is here shown with neither top nor bottom exposed. 



At Grant and extending for a half mile down Black creek "a^g-ood 

 section (20 to 30 feet) of lower to middle Trenton beds may t)e 

 seen. 



The upper Trenton limestones are well shown at Hinckley; be- 

 tween Trenton and Holland Patent ; north and northeast of Steuben 

 Valley ; along Town Line (Cincinnati) creek from Prospect station 

 (R. W. & O.) to Remsen; in the vicinity of Honnedaga and Bard- 

 well Mill; and south of Alder Creek station. Besides these many 

 smaller outcrops were found. 



The upper, gray, coarse crystalline beds form the surface rock 

 (largeh" covered by glacial drift) over most of the western portion 

 of the Trenton limestone area. They are especially well shown 

 near the Utica shale contact line. 



Dolgeville (upper Trenton) shales. A series of alternating thin 

 bedded limestones and shales, lying between the Trenton proper and 

 the Utica shale, and found in the Little Falls district is called by 

 Cushing the Trenton-Utica Passage Series.^ Recently, however, 

 Cushing has proposed the name Dolgeville (upper Trenton) shales 



» op. cit. p. 31-33. 



