THE EH^TIC ROCKS OF PYLLE HILL, BRISTOL. 229 



jn. Limestone^ compact, light^ 

 blue, concretionary, with 

 conchoidal fracture and 





dendritic markings," Cot- 

 ham Marble," 2" to 8", 

 average thickness . . . 



7n. Shales^ light blue, finely\ 

 laminated, with thin I 

 sandy seams, and two 

 thin bands of compact y 

 white limestone in the 

 middle portion of the 

 series ) 









k. Shales^ thinly laminated,\ 

 light grey, weathering to 

 a pale greenish yellow 

 tinge, with thin seams 

 of compact argillaceous 

 limestone 



i. Limestone, argillaceous,^ 

 light blue, weathering to 

 a pale greenish yellow 

 tinge; a massive bed, but 

 regularly laminated and 

 closely jointed, with nu- 

 merous small plants and 

 valves of Ostracoda : also 

 bivalve shells and fish- 

 scales and teeth . . . J 



ft. in. 



3^ 



Small turbinate Gaster- 

 opods(indeterminable). 



"i 



Ostracoda of small size, 

 similar to those in bed 

 " i " [Darwinula). 



I. Limestone^ regularly bedded, ^ 

 light blue, weathering to 

 a pale greenish yellow y Q 1 

 tinge, regularly lamin- 

 ated and closely jointed . 



10 



Estheria mimda, var. Bro- 

 dieana, and a few small 

 OstrSiCodsi(Dainviimla). 

 Naiaclita. 



} 1 \ 



( Actceonina sp,, Schizodus 

 EwaJdi, Cardium rhce- 

 ticum, Cardium sp., 

 Plicatida intussb^iata, 

 Pecten valoniensis^ Ac- 

 rodiis minimus^ Sau- 

 ricJitJnjs aaiviinatus, 

 G yrolepis Alberti, 

 Naiadita, Darwimda. 



