﻿IO 



Bulletin 17 



18 



Lmgula sp., r, 

 Trematis terminalis , r, 

 Dalma?iella testudiyiaria, c, 

 Rafinesquina alternata, r, 

 Zygospira recurvirostris , r, 

 Bellerophon bilobatus, c, 

 Asaphus platycephahis, c, 

 Calyme?ie senaria, c, 

 Ceraurus pleurexanthemus , r, 



Monticulipora lycoperdon, a, 

 Stictopora elegantula, rr, 

 Diplograptus ample xicaulis, r, 

 Conularia trentonensis, r, 

 Pelecypoda sps. , r, 



' Orthoceras sp. , c, 



*Endoceras sp., c, 

 Fucoids, r, 

 Crinoid columns, c. 



J- 55~57 °f notes. Top of A,, and base of A 6 , P. & C. 



The lower ten feet consist of quite pure, thin bedded dark 

 gray limestone with shaly partings. The upper three feet are 

 very impure limestone interbedded with thick layers of shale. 

 Exposed just above Middle High Fall. The base of the contorted 

 stratum of Theodore G. White, which is also a datum point for 

 Prosser & Cumings' measurements, is 7 ft. 8 in. above the base 

 of this zone. 13 ft. 4 in. = 128 ft. 3 in. 



Lingula rectilatei'alis , rr, 

 Trematis terminalis , r, 

 Dalmanella testudinaria, c, 

 Triplecia extans, rr, 

 Rafinesquina alternata, r, 

 Plectambonites sericeus, rr, 

 Zygospira recurvirostris, r, 

 Bellerophon bilobatus, c, 



Asaphus platycephahis , c, 

 Calymene senaria, r, 

 Cerauriis pleurexanthemus , rr, 

 Conularia trentonensis, rr, 

 Monticulipora lycoperdon, r, 

 "Orthoceras sp., c, 

 Fucoids, r, 

 Crinoid columns, r. 



K. 58-59 of notes. Part of A 6 , P. & C. 



Hard, fine grained, quite pure limestone with shaly partings, 

 grading into a very thin bedded portion. In the lower part 

 Bellerophon bilobatus is very abundant and finely preserved, while 

 in the upper third Dalmanella testudinaria is dominant, the shale 

 being full of fine specimens. The zone extends to the seam in , 

 the cliff of Upper High Fall. Zone of Bellcropho7i bilobahis. 

 27 ft. 2 in. = 155 ft. 5 in. 



