Upper Lias, Bloxham, Oxon. 427 
the Transition Bed (acué? hemera), Paper Shales (¢enwicostati hemera), 
or Fish Bed (exarati hemera). A thin bed of Upper Lias limestone, of 
falcifert hemera, immediately succeeds the Marlstone and may be best 
described as ‘“ welded on” to it. This limestone is succeeded— 
according to H. B. Woodward !—by 
‘Blue and grey marly clay with thin bands of grey ferruginous nodular 
earthy limestone. Ammonites communis, A. bifrons, A. serpentinus, etc.”’ 
Above comes the Cephalopoda Bed of certain local authors. This 
bed is 5 inches thick, and in places is a ferruginous oolitic limestone. 
It has yielded Frechiella aff. subcarinata (Young & Bird), and is of 
subcarinati hemera. Resting on the last bed and occupying hollows 
in its surface is a thin layer, barely half an inch thick, made up 
entirely of crinoidal remains. Of this layer Mr. E. A. Walford has 
written :— 
“Thin and inconspicuous as the crinoidal stone is, I have traced it over the 
country ten miles north of Banbury, where below it are seen the Fish Bed and 
the Transition Bed...” ? 
Clays, measuring some 15 feet, complete the section. They are. of 
fibulati date. The total thickness of the Upper Lias in this neighbour- 
hood is about 70 feet. The deposit above the “ crinoidal stone ” 
is probably clay only, and the whole of jibulati date. Unfortunately, 
there are not any exposures of use in the vicinity. 
As the result of his examination of the ammonites, Dr. Trueman 
reports :— 
“Tt has not usually been possible to assign specific names—several new 
species are no doubt included. The specimens are in many cases identical with 
those I have from Grantham and undoubtedly they indicate the presence of 
beds similar to those that are so fossiliferous there. 
Judging from my experience there, I should say that the Falciferum- 
? Pseudovatum- and Subcarinata-Zones are represented, with quite possibly the 
Fibulatum-Zone (judging from the Pseudolioceras).” 
The following is the list of the ammonites :-— 
Celoceras aft. fonticulum (Simpson). 
oe) sp. ; 
Dactilioceras cf. acanthus (d’Orbigny). 
as commune (J. Sowerby). 
a cf commune (J. Sow.). 
fe cf. commune (J. Sow.). Stout form. 
o ef. gracile (Simpson). 
S aff. semicelatum (Simpson). 
Pah sp. Intermediate between Peronoceras holandrei 
(d’Orb) and D. commune (J. Sow.). 
Frechiella aff. subcarinata (Young & Bird). A little more slender 
than the type. 
Harpoceras connectens (Haug.). 
a aff. faleiferum (J. Sow.) 
1‘ The Jurassic Rocks of Britain, vol. iii—The Lias of England and Wales 
(Yorkshire excepted),” Wem. Geol. Surv. (1893), p. 269. 
2 Proc. Geol. Assoc., vol. xiv (1895), p. 178. 
