﻿Vol, 6 1.] SEQUENCE IJST THE BRISTOL AREA. 215 



Exposures : — 



(1) In the Failand section (above Horizon a up to, and 



including, the lower portion of the roadside-cutting west 

 of the Horse-Race Quarry). 



(2) Roadside quarry near Failand-Hill House (Horizon /3). 



Faunal character: — 



(i) Of the bassus-subzone (K,). 



. All the fossils here mentioned were collected from the lowest 

 part of the Failand section. 



Syringothyris aff. cuspidaia. 



Leptena analoga. 



Ortkotetes crenistria (mut. Kj). 



(ii) Of the octoplicata-siibzone (KJ and Horizon /3. 



The fossils here mentioned were collected only from the top of 

 the zone in the Failand section, and in the quarry near Failand- 

 Hill House. 



Chonetes cf. Buchiana. 

 Chonetes cf. crassistria. 

 Productus 



Cliothyris Boyssii (mut. /3). 

 Spirifer aff. clathratus, in gradually- 

 increasing numbers. 

 Syringothyris aff. cuspidata. 

 Camarotoechia mitcheldeanensis. 

 Leptena analoga. 

 Ortkotetes crenistria. 



Zaphrentis-TiOYLQ (Z) . 



Bhipidomella aff. Michelini} 

 Productus cf. Martini. 

 Chonetes cf. Buchiana. 

 Chonetes cf. crassistria (very 



abundant). 

 Chonetes cf. hardrensis. 



Lithological character. — Massive encrinital limestones 

 which are thinner towards the bottom, where thin shales are 

 intercalated among them. 



i. Clathratus-subzone (Z x ). 

 Exposures : — 



(1) In the Failand section (the upper part of the roadside - 



cutting west of the Horse-Race). 



(2) Small exposures near Failand-Hill House. 



(3) A small quarry at the northern end of Fifty-Acre 



Plantation (east of the golf-links). 



Fauna : — 



Leptena analoga. 

 Orthotetes crenistria (mut. Z). 

 Rhipidomella aff. Michelini. 

 Chonetes cf. crassistria (rare). 

 Chonetes cf. 



Zaphrentis aff. Phillipsi. 

 Cliothyris Boyssii (mut. j8). 

 Spirifer aff. clathratus and vai 



in great abundance. 

 Syringothyris aff. cuspidata. 



ii. Resupinata-subzone (including the lowest part of 

 Horizon 7). 



Exposure. — The 'Horse-Race Quarry' in the Failand 

 section. 



1 Only found in the quarry near Failand-Hill House. 



Q. 2 



