﻿LOCALITIES IN " SILURIA." 101 



however, was very successful in finding fossils. In " Olive shales" at the base of the 

 quarry he found Pterygotus Banksii, and three species of Eurypterus, determined by 

 Mr. Woodward. He also discovered a nearly entire specimen of a new species of 

 Eurypterus, named by Mr. Woodward E. Brodiei, and described by him before the British 

 Association at Liverpool, 1870. 1 I may here state that these Perton beds rest on 

 the Downton Sandstone proper. I obtained a specimen of the carapace of a Pterygotus 

 from yellow sandstone, lying underneath the " olive shales " of Mr. Brodie, and not now 

 exposed. The Pertori beds also contain many remains of carbonized Plants, and the seed- 

 vessels regarded by Dr. Hooker as Lycopodiaceous have been found therein. It may 

 interest our readers to state, that the original specimens from which these seeds of land- 

 plants were determined, were found years ago by Mr. Strickland and the writer of these 

 notes, at Gamage Ford, 3 on the south side of the Woolhope anticlinal. The " Bone-bed" 

 is found near Gamage Ford ; and from shales closely connected therewith I obtained some 

 beautiful specimens of the shields of Scaphaspis, which appear to be the same as Scaphaspis 

 ludensis of the Lower Ludlow Rock of Leintwardine. With these two occurred fish-spines 

 and portions of the carapace of Pterygotus. The ichthyodorulites are in the cabinet of the 

 Earl of Enniskillen. 



10. — Passage-beds at Linley, Salop. 



The most northerly extension of the Passage-beds in the Silurian region is probably 

 at Linley, Salop, which I visited in company with the late Mr. George Roberts, who, in 

 conjunction with Mr. John Randall, published a paper thereon in the ' Quarterly Journal 

 of the Geological Society' (1863, vol. xix, p. 229, &c). Sections along the Linley 

 Brook, four miles north of Bridgenorth, show the positions of the beds. The Coal-mea- 

 sures there rest upon a denuded surface of red Passage-clays, the relics of the denudation 

 of the Old Red Sandstone ; and below these we have twenty feet of light-coloured grits, 

 with remains of Plants and fragments of Crustaceans. The whole section through the 

 Old Red clays down to a limestone in the Upper Ludlow is about eighty feet. Lingula 

 cornea ranges from the red Passage-beds through the Downton beds down to some shales, 

 with remains of Fishes, Crustaceans, and Lingula, which I believe to be the repre- 

 sentative of the Ludlow Bone-bed. Flaggy beds with Serpulites longissimus represent 

 here the Upper Ludlow Shales, which pass into limestone (Aymestry Limestone ?). I do 

 not think that any beds at Linley can be correlated with those of Trimpley, near 

 Kidderminster, as was supposed, which are, I believe, higher in the Lower Cornstone 

 series of the Old Red Sandstone, and are not Passage-beds. 



1 Since figured and described in the 'Quart. Journ. Geol. Soc' 1871, vol. xxvii, p. 261, with a 

 woodcut. See also Trans. Woolhope Club, 18/0, p. 276. Hereford, 1871. 



2 'Quart. Journ. Geol. Soc.,' vol. ix, p. 12, and vol. xvii, p. 162. 3 Ibid., vol. ix, p. 9. 



