KETJPEE SECTION AT SHREWLEY. 



541 



the first specimens were found were two impressions of footsteps of 

 a large Labyrinihodon, and I fancy that the whole number, seven, 

 may have been lying on the surface of one large slab afterwards 

 broken on removal. The following section of the quarry will 

 show the probable position of most of the fossils which occur 



there : — 



ft. in. 



1. Soft, brown-coloured sandstone, current-marked 0 11 



2. Green marls, more or less sandy 4 7 



3. Friable sandstones, in beds divided by green marl, softer at the top, 



getting harder at the bottom, with green marly surface 7 2 



4. Seven or eigbt beds of sandstone of variable hardness, with Estheria, 



divided by marls, the bottom rock the hardest 5 0 



5. Hard tea-green marls with Estheria 7 0 



Total 24 8 



This section faces the south; at the east end of the quarry 

 there are about 20 feet of red marls, above the green marls 

 and thin-bedded brown sandstone, Nos. 1 & 2. The strata are 

 nearly horizontal. The ' bottom rock ' is exposed on the canal at 

 Rowington, where it has a slight dip, owing to a local disturbance, 

 and it appears again on the road between that village and Shrewley, 

 and elsewhere. The lowest bed in No. 3, probably containing the fish, 

 is a rather soft, gritty sandstone, made up of small grains of white 

 quartz and other variously coloured rolled material, very small, 

 loosely connected together, and readily broken. Here and there this 

 sandstone is traversed by bands of green marl. The most abundant 

 organisms in this bed, which have been known for a long time, are 

 the remains of Cestracionts, consisting of teeth, palatal and cutting 

 (the latter very rare), of several species of sharks, with the dorsal 

 spines and, occasionally, portions of the shagreen. I have in 

 my collection a series of small palates, united together, which is 

 a unique example from the Trias here. A similar stratum, with 

 similar fossils, occurs at several localities in Worcestershire. 

 Footprints of LabyrintJwdon, generally of small size, are occasionally 

 found on the surface of the sandstones ; and at Rowington remains 

 of plants in a very imperfect condition, among which is Voltzia in 

 fructification, and some small fruits resembling the Jurassic Carjjoli- 

 thus, so called. The 'bottom rock' is an excellent and durable 

 building-stone, and was formerly largely quarried at Rowington 

 and other places. In most works on geology the New Red Sand- 

 stone is simply classed as a series of strata of variously coloured 



Mines, New York. He informs me that he has enumerated about twenty 

 species from the American Trias, viz. : — 



Catopterus, Eedfield 6 species. 



Ischypterus, ^Egevton= Palcsoniscus 12 „ 



Ptycholepis, Agass 1 „ 



Diplurus, Newberry 1 „ 



Dr. Newberry states that the American genus Ischypterus is so near to the 

 genus Semionotus, that if found in Europe, j^gassiz would have referred it 

 unquestionably to that genus. 



Q. J.G. S. No. 171. 2o 



