74 
ICHTH Y OS A UR I A FROM THE 
ICHTHY OS AURIA 
FROM THE POTTON SANDS. 
Index to the Remains of Ichthyosaurs from the Potton Sands 
of Potton and the adjacent country in Bedfordshire, and 
from the Wicken beds of Wicken on the Cam in Cam¬ 
bridgeshire. The sands in these localities are overlain by 
the Galt, and appear to rest for the most part upon the 
clay-equivalent of the Coral Rag [Ampthill Clay], well 
seen upon the Bedford and Luton Railway. The speci¬ 
mens are mineralized with phosphate of lime, and occur in 
ferruginous sand. They are in general but little worn. 
Exhibited on Shelves b and c of Cabinet IV. to illustrate the 
osteology of the genus at the sera of the Potton Sands. 
Ichthyosaurus. 
Cabinet. 
IY 
Sbelf. Specimen. 
b 1—2 
3—17 
18 
c 1—7 
8—9 
10—11 
12—14 
15, 17 
16, 18—24 
CABINET IY. 
coracoid of Ichthyosaurus, 
examples of humerus of Ichthyosaurus 
indicative of four species, 
femur of Ichthyosaurus, 
cervical vertebrse of Ichthyosaurus, 
anchylosed atlas and axis of Ichthyosaurus, 
early dorsal vertebrse of Ichthyosaurus, 
mid dorsal vertebrae of Ichthyosaurus, 
late dorsal vertebrse of Ichthyosaurus, 
caudal vertebrse of Ichthyosaurus. 
t* ■ Mi ._ 
