,00 
LOWER OOLITIC EOCKS OF ENGLAND : 
on the north eide of the hill below Dundry church. The full thickness of 
these beds was not seen ; it is probably upwards of 6 feet. 
The following species have been recorded,* and they indicate that 
the zones of Ammonites humphriesianus and A. Murchisonce are repre- 
sented : 
Ammonites Blagdeni. 
Braikenridgei. 
Brocchii. 
Brongniarti. 
concavus. 
- corrugatus. 
humphriesianus. 
laeviusculus. 
Murchisonae. 
Sauzei. 
Sowerbyi. 
Belemnites canaliculatus. 
Nautilus excavatus. 
lineatus. 
Pleurotomaria elongata. 
Trochus Zetes. 
Astarte elegans. 
excavata. 
Ceromya bajociana. 
Lima Etheridgei. 
pectiniformis. 
Gresslya abducta. 
Modiola sowerbyana. 
Myacites jurassi. 
Opis similis. 
Ostrea flabelloides. 
Pecten demissus. 
Pholadomya fidicula. 
Heraulti. 
Trigonia. 
Rhynchonella plicatella. 
subtetrahedra. 
Terebratula Eudesi. 
cortonensis. 
maxillata. 
Midford Sands. These beds have been poorly exposed, and thoy appear 
to be very thin ; but there are, according to Mr. S. S. Buckman, repre- 
sentatives of the zones of Ammonites opalinus and A. jurensis.^ 
The following fossils have been recorded : 
Ammonites aalensis. 
radians. 
striatulus. 
toarcensis. 
Belemnites irregularis. 
Modiola sowerbyana. 
Pholadomya fidicula. 
Ehynchonella cynocephala. 
The chief fossil-bed of Dundry is thus at the base of the 
Inferior Oolite limestone, and Mr. Etheridge, Mr. J. F. Walker, 
and Mr. Buokmau have commented on the close connection 
between the Ammonites and Brachiopods of this locality, and the 
fossils of the Dorset-Somerset area. At Dundry Ammonites con- 
cavus occurs in the lower portion of the iron-shot division, and 
in the higher portion, Mr. Buckman finds A. Sowerbyi, A. Sauzei, 
and A. humphriesianus.^ These three species locally occupy the 
same horizon, a fact of considerable interest, and there ought to 
be no doubt about the occurrence of A. Suwerbyi, for the original 
figured specimen came from Dundry. 
Referring to the fact that the Lower Division of the Inferior 
Oolue has not been recognized in the Cotteswold area, between 
Little Sodomy and Bath, nor at Midford to the south of Bath, 
Mr. Buckman has suggested that the Dundry area Avas separated 
from the Cotteswold area during the time when these Lower beds 
were accumulated, and only united during the period of the zone 
of Ammonites Parkinsoni. This separation was, in his opinion, 
* See Stoddart, Proc. Bristol Nat. Soc., ser. '2, vol. ii. p. 286. E. Wilson, Proc. 
Geol. Assoc., vol. xiii., p. 128. 
f Quart. Journ. Geol. Soc., vol. xiv. p. 469 ; Inf. Ool. Ammonites, pp. 168, 292; 
see also Etheridge, Quart. Journ. Geol. Soc., vol. xvi. p. 22. 
J Inf. Ool. Ammonites, p, 63. 
