This was the beginning—the beginning of the celebrated dinosaur quarry
which was to yield such a multitude and variety of ancient forms to
science, and eventually lead to the establishment of Dinosaur National
Monument.
Douglass proceeded to dig into the solid rock along those original eight
tail bones and found other parts of the skeleton. In time, the almost
complete frame of the _Apatosaurus_ was exposed. The skull was missing
and parts of the limb bones, but this was to be expected, as fossil
vertebrates are rarely preserved in their entirety. What was not
expected were the remains of a smaller dinosaur comingled with those of
its huge contemporary.