COTTESWOLD DISTRICT. 57 
Limestone can be obtained from the vicinity of Doynton, and also to the fact that 
there are several quarries on the plateau in the Great Oolite. The village of Little 
Sodbury is noteworthy as the place whence the Rev. Mr. Steinhauer supplied 
Sowerby with the types of Trochus concavus, T. duplicatus, and T. dimidiatus 
previous to the year 1818 (‘ Min. Conch.,’ vol. 2, p. 180, pl. 181, figs. 3, 4,5). As 
Little Sodbury itself is upon the Lias, these fossils must have been obtained from 
the Inferior Oolite quarries towards the top of the Cotteswold escarpment. The old 
parish pit in Mr. Steinhauer’s time was situated at the very top of the road which 
leads straight up the hill, from the village, and is about half a mile south of the 
large quarry on Horton Hill. 
Horton Hitt Quarry.—This place is such a long distance from any convenient 
town, being about half way between Bath and Stroud, though somewhat nearer 
the latter, that it has always remained more or less a terra incognita to paleonto- 
logists. The exposure is an extremely interesting one, as affording us an insight 
into the development of the Inferior Oolite between the two points. 
Commencing as usual at the base we find a somewhat variable thickness of 
poorly fossiliferous freestones. The top of this series is indurated and bored, 
affording evidence of a used surface, and thereby to a certain extent of uncomformity. 
The exact age of this series is not easy to determine, though it may be safely set 
down to some part of the Murchisone-zone, such as yields the greater part of the 
freestones or fine grained oolites of the Cotteswolds. Below Hawkesbury Upton 
not less than thirty feet of these beds are exposed. 
The break between this and the rich shell-beds with Gasteropoda is most 
complete, lithologically and otherwise. There can be little doubt that these 
courses are the equivalents of the Upper Trigonia-grit of Stroud, &e. T. costata 
is very large and abundant, whilst the Clavellate species are less numerous. No 
Ammonites were found, but Rhynch. spinosa is not uncommon and often of con- 
siderable size. From this series, but especially from the lower course of stone, a 
considerable number of Gasteropods have been obtained. These fossils were 
associated with the large Conchifera in the ordinary way, but weathering for a long 
period had developed them to a considerable extent. Though fairly numerous, 
they are far less so than the Conchifera, &c. This horizon cannot fail to remind 
us of the one at Grove (see Profile No. 6), and there is one fossil here which has 
never yet been found by me, except in this instance, beyond No. 1 District, viz. 
Cerithiwm ? contortum, Desl., so characteristic of the Parkinsoni-beds of the south. 
Once more, then, we gather a rich harvest of Gasteropods on the horizon of P, of 
Burton-Bradstock Cliff. The absence of any representative of the Humphriesianus- 
zone at Horton Hill seems to be complete. Sometimes these beds occur in three 
courses. 
It is extremely interesting to obtain above this a horizon defined by abundance 
8 
