387 
age—Bradford Clay—runs through Dorset.) Probably with the 
Cornbrash period the most complete connection between all the 
areas was established; but during all this time—in the Cottes- 
wolds ever since the Opalinum-zone, at Dundry since the 
Humphriesianum-zone, but in Dorset only since the early part 
of the Parkinsoni-zone—Ammonites have been conspicuously 
absent from the different areas. It is not until we reach the 
Kelloway rock that they re-assert their old supremacy. 
CONCLUSIONS. 
The conclusions which we arrive at in this paper are :— 
1. That Dundry was, perhaps, connected with the Cottes- 
wold area during the Liassic period. 
2. That it was then completely disconnected from that 
area until the incoming of the Parkinsoni-zone. 
3. That it was always connected actually with the Dorset- 
Somerset area. 
4. That the same sea which deposited the Inferior Oolite 
strata of the Paris basin extended without interruption to the 
district round Dundry. 
5. That from the time of the Upper Lias until the 
Parkinsoni-zone, this sea was cut off from the Cotteswold area 
by some extensive upheavals, thus accounting for the difference 
in fauna. 
6. That Dundry Hill is more correctly described as the 
northernmost outlier of the Anglo-Parisian basin, and is not an 
outlier of the Cotteswolds. 
