324 LOWEE OOLITIC ROCKS OF ENGLAND : 
At Glympton and Steeple Barton, Corals have been obtained 
from the ploughed fields: they include Cryptoccenia Pratti, 
Isastrcea limitata, Sac* Their occurrence at Steeple Barton was 
noticed by Plot, while Charles Faulkner of Deddington obtained 
many specimens from Glympton. Specimens of Cetiosaurvs have 
also been obtained from Glympton, and named C. glymptonensis. 
Prof. Hull notes that at Tackley the upper beds of the Great 
Oolite consist of white limestone, resting upon about 20 feet of 
shales and marls : and these beds have been exposed in the rail- 
way cuttings to the east of the village, and in quarries at Berring'a 
Wood, south of Over Kiddington. Allusion has already been 
made to the argillaceous beds that in this district occur beneath 
the main mass of Great Oolite limestones (p. 320) : these shales 
and marls contain the following fossilsf : 
Modiola. 
Ostrea Sowerbyi. 
Pecten annulatus. 
Pholadomya. 
Terebratula. 
Bhynchonella concinna. 
Other fossils' from the Upper Division of the Great Oolite in 
this area have also been obtained by the Geological Survey. % 
FIG. 91. 
Section across the Dome, Steeple Barton, Oxfordshire. 
(Prof. E. Hull). 
STEEPLE BARTON 
Pt. f n r* J al - Thick-bedded white limestone. 
Ite ' 1 a?. Beds of shale and stony marl. 
Northampton . f a 3 . Slaty ferruginous sandstone. 
Sand. \ a 4 . Yellow sandstone and sands. 
Upper Lias - b. Blue shales. 
Middle Lias - c. Marlstoue. 
Chadlington, Chipping Norton, Tadmarton, and Banbury. 
In the western portion of this area at Chadlington Down, and 
towards Lyneham Barrow, the Great Oolite on the Geological 
Survey Map, has not been properly separated from the Inferior 
Oolite, as it is for the most part in the tract to the north em- 
braced by Quarter Sheet 45 N.W. Nor is this in all cases an 
easy task. (See p. 146.) 
The Great Oolite, as before mentioned, rests indifferently on 
various members of the Inferior Oolite, and we have evidence in 
* Tomes, Quart. Journ. Geol. Soc., vol. xxxix. p. 171. 
t Hull, op. cit., Green, Geol. Banbury, p. 17. 
J Green, op. cit., p. 23. 
