64 



No. 3. — Rubhly Oolite. — Consisting of Oolitic Eagstones, in a 

 fragmentary state, with few fossils. This bed caps the next 

 division. 



2. The Zone op Ammonites HvmvpTvriesianus. 



8ynonym,s.— Inferior Oolite of Dtindry Hill, Contbeare, and 

 Phillips, Outlines, p. 236. Grey Limestone, or Bath Oolite, 

 Phillips, Geology of York, 1829, p. 149. Zone of Ammonites 

 Humphriesicmus, Weight, Jour. Geol, Soc. vol. xvi., p. 17. 



Description. — This zone forms a well-marked division charac- 

 terised by a fauna containing species of Gasteropoda and Conchifera 

 not found in the others. The best type of this zone is the 

 Ferruginous OoHte of Dundry, Yeovil, and Burton-Bradstock; 

 and the only complete series I have found in the Northern 

 Cotteswolds is in the exposure at Cleeve Hill, now to be described. 



The original section in the EoUing-bank has been in a great 

 measure covered up by the fall of the soil, and the thinning out of 

 the rock beds. This quarry consisted of strata that had rolled 

 from a higher level over the western slope of the hill, so that 

 they appeared to occupy a much lower level than they in reality 

 did. The recent workings near the summit, where the roadstone 

 is now excavated by a subterranean cutting, shows the true 

 position of these beds; I refer Nos. 4, 5, and 6 to this zone. 



No. 4. The Brachiopoda bed is a compact crystalline buff- 

 coloured Limestone; many blocks of great hardness are almost 

 entirely composed of the shells of Terehratula Phillipsii. It 

 measures two feet six inches, and contains, besides this species, 

 the following: — 



Lima proboscidea, Sow. Terebratula Buckmani, Davids. 



Terebratula Phillipsii, Mor. Rhynchonella spinosa, Schloth. 



perovalis, »9ow. subtetrahedra, Z»cM;ic?s. 



carinata, Lamk. angulata, Sow. 



On one occasion, by digging into the floor of the quarry, I 

 found a bed of Marly Oolite, or Mudstone; it contained many 

 fossils, the shells of which were in such a perished condition 



i 



