BKITISH FOSSILS. 



93 



Ludlow Bone Bed, Ludlow : Downton Sandstone of Bradnor Hill, 

 Kington. (Mr. R. Banks' Cabinet.) BASE OF OLD RED SANDSTONE, 

 Ludlow Railway Station (Museum of Pract. Geology). Cornstones 

 of Hopton Gate (Cabinet of Mr. J. Harley). 



One of the most widely spread species ; it is probably this which 

 occurs in the Upper Llandovery Rock or " May Hill Sandstone" of 

 the Obelisk, Eastnor Park. A woodcut of it is subjoined. 



EIG. 13. 



Pterygotus problemati- 

 cus, Agass. ? frag- 

 ments of ectognaths. 



Eastnor Park, Malvern 

 (Cabinet of Sir W. 

 Jardine.) 



