SECTIONS B AND C 



153 



The following is the list of species found at this locality ; all belong 

 the coral layer, or middle division of the Hamilton group : 



to 



3. Phacops rana Green. 



15. Orthoceras cf. lambtonense Whit- 186. 



eaves. 193. 



31. Orthony chia (Platyceras) conicum 204. 



Hall. 205. 



32. Diaphorostoma lineata (Conrad). 206. 

 58. Craniella hamiltonise (Hall). 208. 



60. Stropheodonta concava Hall. 209. 



61. Stroph. demissa (Conrad). 212. 

 64. Pholidostrophia iowaensis (Owen). 215. 



79. Rhipidomella penelope Hall. 218. 



80. Kh. vanuxemi Hall. 220. 

 84. Camarotcechia thedfordensis Whit- 221. 



eaves. 222. 



91. Cyclorhina nobilis Hall. 



92. Eunella attenuata Whiteaves. 225. 

 97. Atrypa reticularis (Linn.). 227. 



105. Spirifer mucronatus var. thedford- 228. 



ensis S. and G. 230. 



111. Cyrtina hamiltonensis Hall. 231. 



114. Nucleospira concinna Hall. 233. 

 117. Parazyga cf. hirsuta Hall. 



143. Reteporina prisca Nich. 237. 



171. Spirorbis omphalodes Nich. 238. 



Crinoid joints. 

 Nucleocrinus elegans Conrad. 

 Dolatocrinus (spines). 

 Aulopora serpens Goldfuss. 

 Monilopora antiqua Whiteaves. 

 Ceratopora intermedia (Nich.). 

 C. dichotoma Grabau. 

 Trachypora elegantula Billings. 

 Cladopora frondosa Bill. 

 Alveolites goldfussi Bill. 

 Favosites placenta Rominger. 

 F. turbinata Bill. 

 F. billingsi Rom. 

 F. alpenensis Winchell. 

 Zaphrentis sp. 

 Z. prolifica Bill. 

 Cyathophyllum conatum Hall. 

 C. cf. robustum Hall. 

 Heliophyllum halli E. and H. 

 H. tenuiseptatum Bill. 

 Craspedophyllum subcsespitosum 



(Nich.). 

 Cystiphyllum vesiculosum Goldfuss. 

 C. conifollis Hall. 



Stratigraphically section B is below section A. 



SECTION C-BR1CKYARD 



The section here exposed 

 comprises the following strata 

 in descending order : 



Drift 1 foot 



3. Clay, mingled with drift, 

 full of corals of the 

 same type as those 

 found at section B, this 

 being in fact the disin- 

 tegrated ' ' coral layer " 2 feet 



2. Encrinal limestone in 

 several beds, the lowest 

 separated from those 

 above by a two to four 

 inch bed of black shale 

 full of crushed shells 

 of Leiorhynchus (26). . 3 feet 



1. Blue, apparently non-fos- 



siliferous clay 15 feet 



Figure 3 — Section C— Brickyard. 

 Figures as in text. For scale see figure 4. 



