MIDDLE LIAS: LINCOLN. ^41 
Ammonites communis Pecten. 
Belemnites. Rhynchonella fodinalis. 
Cardium truncatum. tetrahedra. 
Hinnites. Waldheimia Waterhousei. 
Lima punctata. Terebratula punctata. 
Mr. W. H. Holloway remarked that this nodular band showed 
oolitic structure in places, and he compared it with the nodular 
bed seen elsewhere at the base of the Marlstone. This suggestion 
is important for we find a nodular bed extending onwards towards 
Lincoln at about the same horizon. It seems probable that the 
nodule-bed at Gonerby may be on the same general horizon. 
(See list of fossils from clay beneath, p. 240.) 
Proceeding towards Lincoln we find the Middle Lias repre- 
sented by clays, with occasional indurated bands of micaceous 
limestone and cement-stone nodules. In the railway-cutting 
west of Coleby the following fossils were obtained by Mr. 
.Rhodes* : 
Ammonites margaritatus 
Belemnites . 
Amberleya (Eucyclus) imbricata. 
Turbo cyclostoma. 
Cardium truncatum. 
Goniomya hybrida. 
v. scripta. 
Pecten lunularis. 
Cardita multicostata. 
Gasteropods were numerous. 
The old brickyard west of Waddington showed about 15 ft. 
of micaceous shaly clay with cement-stones, and here A. mar- 
yaritatns and Pecten cequtvalvu were obtained by Mr. Ussher and 
myself. 
The brickyard south-east of Bracebridge showed the following 
section, in 1885 :- 
FT. IN. 
Bluish-grey and mottled clay with band of 
ferruginous cement-stones - 7 6 
Nodule-bed, consisting of clay and ferrugi- 
nous cement-stones, with phosphatic con- 
cretions - - 1 
Middle Lias 
Shale with two bands of ferruginous cement- 
stone - - 3 
Grey micaceous shaly clay with scattered 
cement-stones, and small nodules of pale 
earthy limestone near top : A. margaritatus 
[_ about 25 
T f Dark blue marl with nodules : A. capricornus, 
Lower Lias < , . , , r n 
I A. stnatus, &c. ... about 15 
As before mentioned, Ammonites capricornus and less frequently 
A. striatns, occur in the clays and nodules for about 10 feet 
upward from the floor of the pit. During a previous visit, Mr. 
Rhodes obtained, from another part of the pit, and about 3 feet 
from the base, a specimen of Ammonites margaritatus : but as 
remarked by Mr. Ussher, the clays which yield A. capricornus 
abundantly, are probably below the site at which the former 
species was obtained. Owing to the easterly dip of the beds and 
the irregular working of the clays, the section varies from time to 
time. 
* Geol. Lincoln, pp. 25, 26, &c. 
E 70859. 
