The modern crocodiles when they lift the body off the ground, waddle forward with the short limbs wide apart, and even the lizards which run on their hind legs have a rather wide tread.

But these dinosaurs ran like birds, setting one foot nearly in front of the other, so that the prints of right and left feet are nearly in a straight line.

This was on account of their greater length of limb, which made it easy for them to swing the foot directly underneath the body at each step like mammals and birds, and thus maintain an even balance, instead of wabbling from side to side as short legged animals are compelled to do.
Of the animals that made these innumerable tracks the actual remains found thus far in this country are exceedingly scanty.

Two or three incomplete skeletons of small kinds are in the Yale Museum, of which _Anchisaurus_ is the best known.
_Megalosaurus._ Fragmentary remains of this huge carnivorous dinosaur were found in England nearly a century ago, and the descriptions by Dean Buckland and Sir Richard Owen and the restorations due to the imaginative chisel of Waterhouse Hawkins, have made it familiar to most English readers.

Unfortunately it was, and still remains, very imperfectly known.