146 
REPTILES OF THE CHALK. 
Tlie most important of these are, unquestionably, 
the vertebrm of the Mososaurus, or Fossil Monitor 
of Maestricht. The quarries of St. PeteFs moun- 
tain near Maestricht, have long been celebrated for 
the remains of one of the most extraordinary ovi- 
parous quadrupeds, hitherto discovered in a fossil 
state : several magnificent portions of the skele- 
VERTEBRjE of the mososaurus, from LEWES. 
1. Two caudal vertebra?. 
2. A dorsal vertebra. 
