484 THE GEOLOGIST. ^ 
I have discovered in the Oxford clay at Newport-Pagneh It is an 
elegant fossil, but by no means common. 
Intercalated with the Oxford clay, in some places, there are frag- 
mentary portions of a hard limestone containing several fossils, and 
among them Rostellaria trifida and Ammonites Calloviensis. Thia 
stone probably represents the Kelloway rock of Yorkshire, &c.,but la 
rarely found in this part of England. The following is a list of the 
fossils which have been found in the Oxford clay of this district : — 
Name. 
Ichthyosaurus communis. Con 
Plesiosaurus 
Ammonites Lambertii, Sow^ 
„ Elizabethse, Pratt 
Belemnites Owenii, Pratt ... 
„ breviatus. Miller 
Rostellaria trifida, Phil. ... 
Cerithium. ... 
„ Damonis 
Ostraea gregaria, Sow. 
Gryphsea dilatata, Sow. 
Modiola imbricata, Sow. ... 
Thracia (?) 
In addition to these, I have found certain doubtful forms, pro- 
bably opercula of some mollusc ; also an abundance of lignite, and 
occasional impressions of small cones {?). The Oxford clay, flanked 
by the Lower Greensand and Gault on the one side, and by the Lower 
Oolites on the other, extends on towards Cambridgeshire and Hun- 
dington in a north-easterly direction. 
Next in order appears the Cornbrash, which is but insignificantly 
represented. It consists of yellowish white limestones very full of 
fossils. The principal localities for these are near Stoney- Stratford 
(where, as Mr. Brodie informs me, he observed many corals), W el- 
ver ton, Olney, and the neighbourhood of Northampton ; also Gay hurst 
(Bucks), where several fossils have been found. A very common 
shell here is Astarte aliena; also a small species of Trigonia, probably 
T, impressa, which is also found near Wolverton. The following 
fossils were also found : — 
Name. Locality. 
Pycnodus (teeth of) ... ... Gayhurst. 
Nucleolites clunicularis, Llhwyd . . . Gayhurst. 
Holectypus depressus, Lam. ... Gayhurst. 
Diadema Bakerise, Wright ... Northampton. 
Ostrsea gregaria, Sow. ... ... Common everywhere. 
Panopsea (a long species) ... Gayhurst. 
Modiola imbricata ... ... Rowley pits. 
Lima duplicata, aS'oz^. ... ... Gayhurst. 
Mytilus sublsevis, Sovj. ... . . Gayhurst, Grendon. 
Locality. 
Newport-Pagnel. 
Little Lindford. 
Wolverton. 
Newport-Pagnel. 
Wolverton. 
Stoke Goldington. 
Ne wport-Pagn el. 
Newport-Pagnel . 
Newport-Pagnel. 
Wolverton. 
Wolverton. 
Wolverton. 
Newport-Pagnel. 
