262 
ELEMENTS OF GEOLOGY. 
Fig. 196. Fig.lOT. Fig. 198. 
Carcharodon angustidens, Agass. Otodus obliquus, Agass. Galeocerdo latidens, 
Agass. 
Teeth of Sharks from Bracklesham Beds. 
MARINE SHELLS OF BRACKLESHAM BEDS. 
Alum Bay and Bournemouth Beds {Lower Bag shot of Eng¬ 
lish Survey)^ B. 2, Table, p. 252. To that great series of 
sands arid clays which intervene between the equivalents of 
the Bracklesham Beds and the London Clay or Lower Eo¬ 
cene, our Government Survey has given the name of the 
Lower Bagshot sands, for they are supposed to agree, in age 
with the inferior unfossiliferous sands of the country round 
Pig. 200. 
Pleurotoma Valuta Turritella 
attenuata, Selseiensis, multisulcata^ 
Sow. Edwards. Lara. 
Fig. 203. Fig. 204. 
+ 
Lucina serrata, Sow Co7ius 
Magnified. deperdttus^ 
Brug. 
Bagshot in the London Basin. This part of the series is 
finely exposed in the vertical beds of Alum Bay, in the Isle 
of Wight, and east and west of Bournemouth, on the south 
coast of Hampshire. In some of the close and white com¬ 
pact clays of this locality, there are not only dicotyledonous 
leaves, but numerous fronds of ferns allied to Gleichenia 
which are well preserved with their fruit. 
None of the beds are of great horizontal extent, and there 
is much cross-stratification in the sands, and in some places 
