226 LIAS OF ENGLAND AND WALES : 
The Transition-bed (with Ammonites acutus) has not been 
particularly noted south of Banbury. It is probably present in 
the following section tak< j n in a quarry north-west of 
Broughton : 
FT. IN. 
f Brown clay - about 2 6 
I Ferruginous earthy clay and stone. Ammo- 
TT p T j nites communis, A. bifrons - 1 
I Purplish and grey clay. Belemnites - - 1 
j Mottled earthy and ferruginous limestone. 
(__ Ammonites and Belemnites - 8 
Transition ("Ferruginous grey and yellowish marly bed. 
Bed. 4. A. communis - --OS 
rHard brown and greenish earthy limestone."] 
Middle Lias. I Belemnites abundant. L 10 
(Marlstone.) | More or less ferruginous sandy limestones, | 
I and ironstone-beds - about J 
The brickyard east of Easington, south of Banbury, showed the 
lower beds of Middle Lias as follows : 
FT. IN. 
f Fissile calcareous sandstone in large con- 
cretionary masses, very micaceous 6 to 1 6 
Middle Lias. <( Pale grey and brown micaceous sandy clays, 
| with paler lenticular clayey masses. Ob- 
(_ scure casts of Avicula, Cardium, &c. - 20 
These beds are exposed in the cutting of the road leading from 
Banbury towards Broughton. 
Lower beds are exposed in the brickyard by the Canal to the 
east of the above, as follows : 
FT. IN. 
Middle Lias - Brown micaceous sandy loam - about 10 
{Blue sandy and micaceous shaly clay, with 
hard brown earthy and ferruginous 
nodules - - about 10 
I found one specimen of Ammonites capricornus, and it is 
probable that the beds represent the base of the zone of A. 
inaryaritatus and the top cf that of A. capricornus. This is 
confirmed by the list given by Mr. T. Beesley, where fossils 
characteristic of the two zones are given ; but they are not 
separated by him. A separate list is however given of fossils 
from the shales immediately below the Marlstone of Banbury, 
in which the occurrence of Ammonites Engclhardti with A. 
margaritatus is noteworthy.* (See also pp. 216, 231.) 
The most important quarries in the Marlstone of this district 
are those at Hornton, about a mile north-west of the church. 
There are several quarries here, from 20 to 25 feet deep. These 
show the following beds : 
Fr. IN. 
f Brown loamy and rubbly soil - 3 to 5 
I Brown (and blue-hearted) sandy ironstone 
Middle Lias J more or less rubbly or thin bedded - 7 
(Marlstone). j Brown bluish and greenish, slightly calcareous, 
sandy and ferruginous stone, in more or 
[_ less massive beds - - - about 9 
* Proc. Warwickshire Field Club, 1872, pp. 14, 15. 
