PUR BECK SERIES. 
89 
ORNITHOSAURIA 
FROM THE PURBECK SERIES, NEAR SWANAGE. 
Exhibited in Cabinet lxxxii., Shelves a and b. 
Cam. Shelf. 
82 a On this shelf are temporarily placed the cervical 
vertebrae of a Whale (Palaeocetus Sedgwicki, 
Seeley) reputed to be from the Kimeridge Clay 
of Ely. 
Pterodactylus macrurus. 
a lower jaw of a Pterodactyle, from Langton, near 
Swanage, presumed to belong to the same ani¬ 
mal as the vertebra 82.6.4. The specimen is 
slightly imperfect in front, and the rami do not 
extend so far as the articulation behind. So 
much as is preserved measures in length 12j 
inches; and where fractured behind, the rami 
measure 2| inches from side to side. The sym¬ 
physis is 5 inches long, at its anterior termina¬ 
tion the jaw expanding a little is nearly f of an 
inch wide; at the termination of the symphysis 
behind it is an inch wide. The rami are marked 
in the anchylosed part by a deep palatal groove. 
Behind the symphysis the rami narrow from 
side to side. The teeth were very small, have 
all fallen from their sockets and extended on 
