﻿Bulletin 17 



16 



ous near the top. It includes nearly half of the heavy black 

 layer so prominent along the path between Sherman and Lower 

 High Falls. Zone of Plectambonites sericeus. 13 ft. 5 in. = 

 49 ft. 8 in. 



Lingula sp. , r, 

 Trematis terminalis, r, 



Dalmanella testudinaria, c, 

 Platystrophia lynx, rr, 

 Rafiyiesquina alternata, r, 

 Plectambonites sericeus, aa, 

 Ctenodonta sp. , rr, 

 Bellerophon bilobatus, r, 



Asaphus platycephalus, c, 

 Calymene sefiaria, c, 

 Diplograptus amplexicaulis , rr, 

 Stictopora sp. , rr, 

 Monticulipora lycoperdon, r, 

 ■ Orthoceras sp. , r, 

 Crinoid columns, c. 



E. 43 of notes. Upper part of A , P. & C. 



Blue black, fairly pure limestone, whose surface becomes very 

 rough on weathering. Best exposed for collecting on east side 

 of stream. Trilobite zone. 1 ft. 7 in. = 51 ft. 3 in: 



Trematis terminalis \ c, 

 Dalmanella testudinaria, r, 

 Platystrophia lynx, rr, 

 Rafinesquina alternata, r, 

 Zygospira recurvirostris, c, 

 Bellerophon bilobatus, rr, 



Asaphus platycephalus, a, 

 Calymene senaria, a, 

 Diplograptus amplexicaulis, c, 

 Monticulipora lycoperdon, rr, 

 - Orthoceras sp., c, 

 Crinoid columns, c. 



F. 44-46 of notes. Base of A., P. & C. F. G. H. and I. 

 constitute the zone of Monticulipora lycoperdon. 



Dark gray, quite pure layers of limestone, two to six inches 

 thick, alternating with thin shaly layers containing an abundance 

 of the hemispheric forms known as Monticulipora lycoperdon Hall. 

 This zone forms the lower layers of Lower High Fall. 6 ft. 

 5 in- =57 f t. 8 in. 



Lingula sp., rr, 

 Trematis terminalis , c, 

 Dalmanella testudinaria, c, 

 Platystrophia lynx, rr, 

 Rafinesquina alternata, r, 

 Plectambonites sericeus, rr, 

 Zygospira recurvirostris, r, 

 Bellerophon bilobatus, r, 



Asaphus platycephalus, r, 

 Calymene senaria, c, 

 Ceraurus pleurexanthemus , rr, 

 Monticulipora lycoperdon, a, 

 Stictopora elegantula, r, 

 ■ Orthoceras sps., c, 

 Pelecj'poda sps., r, 

 Crinoid columns, r. 



G. 47 of notes. Part of A., P. & C. 



