But this represents only a part of the whole deposit, which we know to be of twice the extent already explored, and these figures do not include the bones which were partly washed out and used in the construction of the Bone-Cabin.

The grand total would probably include parts of over one hundred giant dinosaurs.
_The Struggle for Existence Among the Dinosaurs._ Never in the whole history of the world as we now know it have there been such remarkable land scenes as were presented when the reign of these titanic reptiles was at its climax.

It was also the prevailing life-picture of England, Germany, South America, and India.

We can imagine herds of these creatures from fifty to eighty feet in length, with limbs and gait analogous to those of gigantic elephants, but with bodies extending through the long, flexible, and tapering necks into the diminutive heads, and reaching back into the equally long and still more tapering tails.

The four or five varieties which existed together were each fitted to some special mode of life; some living more exclusively on land, others for longer periods in the water.
The competition for existence was not only with the great carnivorous dinosaurs, but with other kinds of herbivorous dinosaurs (the iguanodonts), which had much smaller bodies to sustain and a much superior tooth mechanism for the taking of food.
The cutting off of this giant dinosaur dynasty was nearly if not quite simultaneous the world over.