﻿Yol. 64.] THE FOSSILIFEEOUS SILTJEIAN" EOCKS OF TOETWOETH. 533 



Another small exposure occurs at a cottage west of the high road, 

 and about 150 yards south of Catherine Villa. Here, in a highly- 

 crinoidal red rock (clearly a decalcified sandy limestone), we found 

 Stroj^homena compressa and numerous crinoidal remains. No 

 further exposures were found between this point and Stone 

 Bridge. There, however, the small road-cutting by the farm shows 

 compact unfossiliferous limestone, and much debris of similar 

 material occurs in the neighbouring fields. IN'o dip was obtainable 

 at this point. About 200 yards east of the farm the following 

 little section occurs : — 



Thickness in feet inches. 

 (7) Red, fissile, calcareous sandstone passing down into "1 o q 

 (6) Thinly-bedded ferruginous limestone, passing into J 

 (5) Dark sandy limestone, coarser above than below ... 1 3 

 (4) Ferruginous and calcareous grit, with many bryozoa. 6 

 (3) Coarsely-crystalline gritty limestone, full of frag- 

 mentary fossils 1 



(2) Hard, thinly-bedded, reddish, sandy limestone, 



with many crinoids 1 



(1) Very fissile, thinly-bedded, calcareous sandstone, 

 full of crinoids, passing down into shale with a 

 band of limestone 2 inches thick at the base 5 3 



12 



In Band 1 of the foregoing section we obtained Stroplieodonta 

 iilosa(l), Scenidiiim Lewisi(?), Orthis elegantula, and Phacops 

 StoJcesi or Dowmngice. Stro^homena compressa and Stenopora 

 fibrosa occurred in Band 2. 



Mr. W. D. Lang kindly examined the bryozoa, but unfortunately 

 they were:not identifiable. 



(B) The Charfield-Green Area. 



A band of Wenlock Limestone can be traced along the western 

 border of the Silurian area close to the Triassic outcrop, and is 

 marked by small quarries long overgrown. It is seen in the hedge- 

 bank about 100 yards south of Poolfield Earm, and a short distance to 

 the north-west it occurs at a little old overgrown quarry, part of 

 which was cut back so as to show 4| feet of mottled pink and 

 yellowish, somewhat rubbly limestone, with marly partings, dipping 

 south-westwards at 27°. Below this limestone, shale crowded with 

 Ccenites juniperinus was exposed a few years ago. 



Numerous fossils were obtained from blocks of limestone used in 

 building an old wall near Poolfield Farm, the material having very 

 probably been derived from this or from a neighbouring quarry. 



About 150 yards north of Poolfield Farm a thickness of 21 inches 

 of mottled pink and yellowish, somewhat rubbly limestone with 

 marly partings is seen resting on about 2 feet of red and green 

 flaggy sandstone, the dip being 25° west-north-westwards. 



To the west of this area lies Tortworth Great Copse, which 

 mainly stands upon Trias. The eastern border is, however, probably 

 formed of Silurian rocks, as Lord Ducie has crinoid-stems in a 

 green sandstone-matrix, and Belleroplion dilatatiis, Modiolopsis 



