392 



MISS G. L. ELLES ON THE WEN LOCK 



[May 1900, 



(Ac) Section near Sale. 



The lowest beds seen near Sale are the Llandovery rocks exposed 

 near Buttington Railway-station ; these are succeeded by the Purple 

 Shales, which are splendidly exposed in the railway- cutting north 

 of the Farm. Their relation to the overlying beds is nowhere seen, 

 but there would seem to be considerable overlap at this point. 



Zone of Cyrtograptus rigidus, Tullb. — In the quarry near 

 Sale (loc. 40, fig. 6, p. 391) the beds are seen to consist of hard, pale, 

 earthy flagstones with more shaly bands, which as a general rule 

 are very deeply weathered. They dip S. 10° E. at an angle of about 

 60°, and have yielded the following fossils : — Cyrtograptus rigidus, 

 Monograptus FUmingii var. a, M. vomerinus var. a, and A. dubius. 



These beds, which undoubtedly represent the G.-rigidus zone, 

 are also seen in the brook to the east which joins Trewern Brook 

 at Trewern Bridge (Sale Brook). They are exposed on the right 

 •bank of the stream a short distance above the railway, but the 

 exposure is poor and hard to work; consequently I did not find many 

 graptolites, though I recognized M. FUmingii var. a and M. dubius 

 (see Table IV, col. A, below). 



Zone of Cyrtograptus Lundgreni, Tullb. — Higher up the 

 stream a series of bluish-grey calcareous shales and flags come on, 

 dipping S. lu° E. at an angle of 65° ; in the softer beds I found the 

 forms enumerated in Table IV, col. A. The presence of M. FU- 

 mingii var. t) implies that the beds belong to the C -Lundgreni zone, 



Table IV. 



Names of Species 

 and Varieties. 



[C = very common ; c = common.] 



SALE BROOK 

 GRAPTOLITES. 



03 



•848 



<h 'it 



S3 . 

 O 



Zone of 

 Cyrtograptus 



Lundgreni. 



A 



B 



c 



D 



Locality Nos. (See Map, %. 6, p. 391.) . 



49 



48 6 



45 



47 





C 

 c 



C 

 C 



C 



c 

 c 

 c 



C 



c 

 C 



31. LHeminqii (Salt.) var. a 



„ „ var. 7 



„ „ var. d 



Cyrtograptus Lundgreni, Tullb 





since that form is confined to the highest zone of the Wenlock 

 Shales. Still farther up, where the stream is crossed by a fence, 

 similar beds yielded the graptolites enumerated in Table IV, 

 col. C. Above this point the exposures are continuous for some 

 distance, but the fauna is everywhere the same. 



There is a slight break in the exposure due east of Sale, though 



