POTTON SANDS. 
75 
PLESIOSAURIA 
FROM THE POTTON SANDS OF POTTON AND WICKEN. 
Exhibited on the Shelves of the upright Cabinets IV., V., VI. 
Cabinet. Shelf. 
IV d 
e 
f 
Plesiosaurus. 
Specimen. 
1 right scapula of Plesiosaurus. 
2—11 fragments of humerus or femur of Plesio¬ 
saurus. 
12—13 proximal epiphyses of humerus or femur 
of Plesiosaurus. 
11— 16 fragments of os pubis of Plesiosaurus. 
17 ilium of Plesiosaurus. 
1—11 larger bones of the wrist and fore-arm of 
Plesiosaurus. 
12— 21 phalanges of Plesiosaurus. 
1—34 phalanges of Plesiosaurus. 
CABINET V. 
Genus Plesiosaurus. 
V a 1—68 cervical vertebrae of various species of 
Plesiosaurs, varying much in size, in 
the length of the centrum, and the 
depth of the intervertebral cup. Only 
one specimen, a. 45, is from Wicken, 
and indicates a species different from 
all the Potton forms. 
