270 
LOWER OOLITIC ROCKS OP ENGLA.ND 
Lower Beds. 
Upper Beds. 
Heteropora 
Terebellaria 
Y 
Y 
Y 
C Y 
Serpula 
Apiocrinus 
Cidaris bradfordensis - 
Y 
Y 
C 
C Y 
Echinobrissus - 
Y 
Hemicidaris 
Y 
Calamophyllia radiata - 
Cyathophora - 
Isastrsea 
Y 
C 
C Y 
Montlivaltia 
C 
Stylina Ploti - 
C 
The lower beds of Great Oolite (belonging to the freestone 
division), consisting of false-bedded oolite, and resting on flaggy 
oolite, were exposed on Doncombe Hill, south-east of Marsh- 
field ; and a mile west of Marshfield the oolite was exposed to a 
depth of 5 feet. The upper beds were seen beneath the Bradford 
Clay in a lane below West Keynton Church, where they consist 
of buff false-bedded oolites, with marly layers, and beds of 
compact marly limestone. It is however noticeable that pale 
false-bedded and fissile oolites, resembling beds of Great Oolite, 
occur above the fossiliferous Bradford Clay at this locality. 
Stratigraphically there is no real break in the series. 
At Luckington and Great Sherston, and again from Tormarton 
northwards to Huwkesbury Upton and Symonds Hall Hill, the 
Great Oolite has been worked in places, but I have no records of 
any sections showing the main subdivisions of the formation. 
(See Fig. 67, p. 214 of the Memoir on the Lias.) 
A section at Tiltups End, between Kingscote and Avening, 
south of Nailsworth, was described by E. Witchell. It 
showed fissile sandy and shelly limestones, resting on thick 
beds of white limestone, exposed to a depth of 4 feet. The white 
limestones were taken by Witchell, as the top of the Great Oolite 
(following the Geological Survey) ; and below them come the 
weather-stones of Minchinhampton. From the upper beds he 
obtained several species of Nerincea and other Gasteropoda, 
including fragments of , Purpu roidea, also Cyprina loweana, Iso- 
cardia minima, Lima, Lucina bellona, Ostrea costata, Pecten 
vagans, Terebratula maxillata, &c.* I should prefer to group all 
the beds above noted, with the Great Oolite, as the higher strata 
probably represent the Kemble Beds. 
Proc. Cotteswold Club, vol. viii. pp. 267, 268, 271. 
