﻿216 DR. A. VAUGHAN ON THE PALJ30NTOL0GICAL [May I905, 



Syringothyris aff. laminosa. 

 Cliothyris glabristria (abundant). 

 Reticularia aff. lineata. 

 Leptena analoga. 



Orthotetes crenistria (cf. var. Kellii) 

 Schizophoria resupinata (abundant). 

 Rhipidomella aff. Michelini. 

 Productus aff. Cora (mut. Z). 

 Productus aff. pustulosus. 



Fauna: — 



Zaphrentis aff. cornucopia (very- 

 abundant). 



Zaphrentis aff. Phillipsi. 



Caninia aff. cylindrica (at the top of 

 the quarry, that is, in Horizon y). 



Syringopora 0. 



Spirifer aff. clathratus (not uncommon 

 at the base, rare at the top). 



Syringothyris aff. cuspidata. 



The fossils of this subzone in the Failand area bear a remark- 

 able resemblance both in forms and relative abundance to those 

 at the same horizon in the Clevedon area (see pp. 225 et seqq.). 



Comparison with the Avon section. — Up to the top of 

 the Zaphrentis-Zone, the differences in the faunas of the two 

 sections are too slight for special notice. 



Syringothyris-Zoue (C). 



In ascending order the sequence is : — 



(1) Limestone with Caninia and Zaphrentis. 



(2) Limestone and shales poorly exposed, containing Orthotetes, 



Ghonetes, and an occasional Zaphrentis (cf. Caninia). 



(3) Oolitic limestone (the Caninia-0 olite), practically un- 

 fossiliferous, resting upon a band in which Orthotetes and 

 Ghonetes aff. papilionacea teem, while Syringothyris aff. 

 laminosa is not uncommon. 



(4) Thin shales and dolomitic limestones, poorly exposed. 



(5) The ' BeIle?*ophon-Be&s ' (chiefly composed of massive 



fossiliferous oolite). 



Exposures : — 



(1) Forms the top of the Horse-llace Quarry in the Failand 



section. 

 The upper part of (2) can be seen in the small quarry already 

 described, which lies opposite the north-western corner of 

 Wraxall Piece. 



(3) Comprises (a) the oolite-quarries at the top of the 



Failand section ; (6) the shallow quarry west of Failand 

 Inn ; (c) the small quarry north of Wraxall Piece ; and 

 (d) the large quarry in the north-eastern corner of 

 Wraxall Piece. 



(4) Can be made out very imperfectly, along the side of the 



field-path leading from Failand Inn to the first Bellerophon- 

 quarry. 



(5) The first and second BeUerophon-qu&Yries already de- 



scribed, and a disused quarry about 300 yards east of 

 Failand Inn. The last-mentioned quarry lies a little 

 north of the line joining the first and second Bellerophon- 

 quarries, owing to the rise in the ground between those 

 two quarries. 



