374 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [June 4^ 



2. On the Upper Keuper Sandstone {included in the New Red 

 Marl) of Warwickshire. By the Rev. P. B. Brodie, 

 M.A., F.G.S. 



Having lately obtained some slabs with Posidonia {Estheria) mi- 

 nuta * from the Keuper Sandstone near Warwick, and these being 

 finer specimens than are usually procured, I thought a few of them 

 might be acceptable to the Society. 



The Keuper formation of Warwickshire has been already so ably 

 described by Sir R. I. Murchison and Mr. H. E. Strickland f, that 

 I have but little to add respecting it. The slabs with Posidonia 

 occur plentifully along the banks of the canal near Shrewley, in 

 green marls and sandstone, a few feet above the inferior red marl ; 

 but the specimens are best preserved in the sandstone. The old 

 quarries on Shrewley Common, now enclosed, are entirely stopped 

 up ; but a partial excavation near the canal last summer afforded 

 numerous Ichthyodorulites of various sizes, and probably belonging 

 to an undescribed species of fish, the small palatal teeth of which 

 are the same as those which had been previously noticed by my 

 friend Mr. Symonds and myself at Pendock, in Worcestershire, and 

 which Sir P. Egerton considered to be referable probably to a new 

 genus X' Portions of long, thin, slender bones were also discovered, 

 and one of some size, but too imperfect to be determined. I have 

 also in my cabinet a cranial bone of a Labyrinthodon from Shrewley. 

 A few small teeth and scales of fish occur in the soft gritty bed in 

 No. 2 of the Section given below. 



Most of the blocks of sandstone are strongly ripple-marked, a 

 prevailing character with this portion of the Keuper in Warwickshire, 

 Worcestershire, and Gloucestershire. On some slabs I found the 

 footsteps of a small Batrachian ; and, though I carefully instructed 

 the workmen to preserve all markings on the stone, few were 

 brought me which could be traced to any organic origin. The 

 Ichthyodorulites are met with both in the sandstones Nos. 2 and 6, 

 chiefly in the former, and in the gritty sandstone intercalated with 

 it. The palatal teeth of Acrodus, with small teeth and scales, ap- 

 pear to be confined to the gritty sandstone. 



The following is a section of these strata on the banks of the 

 Canal at Shrewley, in descending order: — 



Ft. in. 



1. Green Marl 3 or 4 



2. Beds of grey and light-coloured fine-grained 



sandstone, divided by marl ; wdth Posidonia 

 minutay and ripple-marks. In the middle 

 occurs a coarse gritty sandstone with white 

 specks (less coarse than at Pendock in 

 Worcestershire), which contains bones, teeth, 

 and spines of Acrodus 1 9 



* See Appendix, p. 376. t Trans. Geol. Soc. 2nd Ser. vol. v. p. 331. 



X See Quart. Journ. Geol. Soc. vol. xi. p. 451. Sir P. Egerton thinks that it 

 is possibly the same as that figured in Trans. Geol. Soc. 2nd ser. vol. v. pi. 28. fig. 3. 



