516 DELPHINID & 
CETACEA. DELPHINID. 
Fig. 213. 
Skull of thick-toothed Grampus. Fen, Lincolnshire. 
PHOCZENA CRASSIDENS. Thick-toothed Grampus. 
Tur most complete example of the skeleton of a Ceta- 
ceous animal which, by the alteration of the osseous tex- 
ture, and by the peculiar configuration of the bones, 
claims to rank with the British Fossil Mammalia, is that 
which was discovered in the year 1843 in the great fen 
of Lincolnshire beneath the turf, in the neighbourhood of 
the ancient town of Stamford, and which is now preserved 
in the Museum of the Stamford Institution. 
The skull (fig. 213), which is almost entire, and the 
teeth, some of which are preserved in the lower jaw, prove 
the animal to have belonged to the Dolphin tribe (De/- 
phinida), and to the short-jawed or Porpoise genus (Pho- 
cena), and herein to be comparable in point of size with 
the Round-headed Porpoise (Phocena melas), the Grampus 
(Phocena orca), and the Beluga (Phocena leucas). 
It differs sensibly from the skull of the Beluga by its 
concave profile, and by its greater breadth in proportion 
