446 LOWER OOLITIC EOCKS OF ENGLAND: 
Near Witney the Cornbrash has been exposed on the side of 
the Woodstock road and also on Curbridge Common. The 
beds have been described by W. S. Horton, who obtained at the 
former locality, Ammonites macrocepha.lv s, A. discus. Nautilus, 
Pholadomya, Isocardia, Gresslya, Terebratula maxillata, Echino- 
brissus clunicularis, Holectypus depressus, Glyphea rostrata, &c. 
At Curbridge Common he found Waldheimia obovata to be very 
abundant ; and species of Trigonia, Lima, Astarte, and Modiola, 
together with Acrosalenia hemicidaroides, were also obtained.* 
Several outliers of Cornbrash are met with on Wychyvood 
Forest, but the most northerly trace in Oxfordshire occurs at 
(See p. 376.) 
FIG. 132. 
Section at Alvescott Doiuns, south-east of Shilton, Oxfordshire, 
(Prof. E. Hull.) 
( ? " "" 
RN8RASH ' 
FOREST MARBLE 
FT. IN. 
{a. Soil - - - - - -06 
b. Hard thin-bedded ragged limeitone - 6 
c. Loose rubbly limestone, very fossiliferous - 3 
CD. \Vhite fine-grained oolitic freestone, obliquely 
Forest Marble. | laminated - - 10 
The occurrence of Cornbrash in the railway-cutting east of 
Pest House, between Hook Norton and Chipping Norton, was 
pointed out by Prof. Morris and Mr. Iludleston. From the 
rubbly grey limestones there exposed, I obtained Terebratula 
intermedia, Waldheimia obovata, Myacites, and Pccten vagans. 
Mr. Beesley notes also Avicula cchinata.^ The same observer 
mentions that Cornbrash fossils (A. echinata, Wald. obovata, &c.) 
were found in a ploughed field on the hill north of Lower 
Tadmarton, south-west of Banbury.J From Witney to Church 
Handborough the outcrop of the Cornbrash is narrow, but it 
again occupies an extensive area near Woodstock and Kirtlington. 
Jt was exposed above the Forest Marble in a quarry at Blddon 
(see p. 373) 5 and again in Blenheim Park, near Old Woodstock. 
The new railway to Woodstock opened up some fine sections in 
this formation, which I visited in company with Prof Green. 
* Geologist, vol. iii. p. 251. 
f Proc. Geol. Assoc., vol. v. p. 177. 
J Ibid., vol. Hi. p. 202. 
Hull, Geol. Woodstock, p. 24. 
