134 EXTINCT MONSTERS 
labours of Professors Buckland, Phillips, Owen, and Marsh— 
may be regarded as the type of the carnivorous Dinosaurs; and 
it affords an excellent and instructive instance of the gradual 
restoration of the skeleton of a new monster from more or less 
fragmentary remains. Certain very excusable errors were at first 
made in the restoration, but these have since been rectified by 
a comparison with the allied American forms, such as Allosaurus 
(see Plate XV.), of which nearly entire skeletons have of late been 
discovered in strata of Jurassic age—in fact, the same rock in 
Fic. 43.—Skeleton of Megalosaurus, restored from the English Oolites. 
Colorado as that in which the huge Atlantosaurus bones lay hid. 
The accompanying woodcut (Fig. 43) shows how the skeleton has 
been restored in the light of these later discoveries of Professor 
Marsh. The large bones of the limbs were hollow, and many 
of the vertebre, as well as some of those of the feet, contained 
cavities, or were otherwise lightened in order to give a greater 
power of rapid movement. 
It is not very difficult to imagine a Megalosaur lying in wait 
for his prey (perhaps a slender, harmless little mammal of the 
