70 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



the Trinucleus shales below. It is difficult to examine, as, except in 

 droughts, one must stand up to the knees in water. Further down 



Section on the north hank of the River Onny, at Cheney Longville 

 foot-bridge, Shropshire ; showing the Pentamerus-beds lying un- 

 conformably on the older strata. 



S. Trinucleus-shales (Llandeilo and Bala rocks), 



7. Pentamerus-beds. 8. Purple shales, followed by Wenlock-shale. 



the brook the banks show red shales (No. 8), not far from the foot- 

 bridge, below which the ordinary Wenlock shale makes its appearance. 

 No Pentamerus oblongus occurs at this section, but by following 

 the line northwards, it is found in abundance, with the Atrypa hemi- 

 sphcerica, &c., at the following places : — Banner-bank plantation near 

 Acton Scott ; and in the brook at Ticklerton, and the Holly Farm, 

 Soudley, the limestone (locally called " Jacob's ") is full of large 

 specimens of this shell, which is the prevaihng fossU from hence to 

 Buildwas. The limestone and overlying shale is remarkably well 

 seen at Ticklerton. It occurs again in well-developed beds in the 

 brook that runs from Stone Acton towards Rushbury, and is then 

 traceable by blocks in the ploughed lands and in the ditch-courses 

 to Day's Coppice, and to the north of Church Preen along the 

 Kinley ridge. Near Harley there is an excellent section in the 

 brook at Merrish-wood, and another in the brook eastof Belswardins. 

 The following are characteristic fossils : — 



Acidaspis crenatus. Morrell's Wood, Wrekia. 



Encrinurus pimctatus, ****. 



Phacops Stokesii. 



Illaenus ; — a trilobed species ; at Cheney Longville. 



Calymene Blumenbachii. Morrell's Wood. 



Cyphaspis megalops. Do. 



Phacops caudatus. Belswardin, Acton Scott, &e. 



Trinucleus concentricus. Very rare ; only at Acton Scott, in soft 



yellowish sandy shale with Atrypa hemisphaerica. 

 Beyi'ichia tuberculata. 



Tentacvilites annulatus ; var. with close rings, ***. 

 Annelide-markings, very common. 

 Atrypa hemisphaerica, ****** 



var. with two raised plaits. Morrell's Wood. 



reticulai'is, ***. 



Orthis elegantula. 



reversa, **. 



testudinaria. 



vespertiUo ? One specimen. Acton Scott, sandy shales. 



calligramma. Rare. Belswardin, near Cressage. 



Stro])homena pecten, ***** 



*** 



- compressa, 



-, one or two other species. Morrell's Wood &c. 



