118 
PLESIOSA URIA FROM THE 
Case. Shelf. Specimen. 
Ill e 
e 1—26 
27—29 
30—41 
42—43 
On this shelf are associated vertebrae of Ple¬ 
siosaurus from Stanground near Peter¬ 
borough. (Porter Collection.) 
are cervical vertebrae, e 1 is an inch and a 
quarter from side to side and less than an 
inch and a half long; e 26 is two and a 
half inches long. The intervertebral surface 
in all is quite fiat, with a small central boss, 
except the first two or three, in which it is 
a little cupped. The body of the vertebra 
is compressed from side to side. The neural 
arch is anchylosed. 
pectoral vertebrae. The vertebrae are impressed 
at the sides, below the tubercle for the rib. 
dorsal vertebrae, with the rib on the neural 
arch. The last three are shorter and pro¬ 
bably from near the sacral region, 
are large dorsal vertebrae, probably from a dif¬ 
ferent specimen. 
Ill / 
1 
2 
3 
4 
5—9 
10—11 
right coracoid, j 
associated with the Plesio¬ 
saur on e. 
left coracoid, 
right scapula, 
undetermined, 
small rounded single-headed ribs*, 
two slender lower jaws of a Crocodilian ani¬ 
mal*. 
CABINET IY. 
YI a 1—17 unanchylosed atlas and axis and fifteen cer¬ 
vical vertebrae of a Pliosaurus from the Ox¬ 
ford Clay of Great Gransden. The wedge 
bone is anchylosed to the atlas. It is much 
larger than, and distinct from, Pliosaurus 
Evansi. Presented by L. Ewbank, Esq. It 
may be named Pliosaurus pachydeirus. 
* The remainder of the Plesiosaurs and Crocodiles from the Oxford Clay 
are in Cabinet D in the Lecture-room. 
