“And so, quite often, Perry, when I walk up and down the silent canyons, round and round the lonely buttes, as I go climbing and scrambling in the sun, I stop and wonder if sometime I may not see a shadowy figure such as the Indians would have loved, stride across the sky.

Courtesy of American Museum of Natural History.

Museum Camp in Wyoming Bad Lands.

Courtesy of American Museum of Natural History.

The Largest of the Titanotheres.

Brontotherium, male, female and young, from the rocks of the Wyoming Bad Lands. The largest Brontotherium was almost as tall as an elephant and fourteen feet long.

“And then, Perry, a brown stain in a rock changes the nature of the dream and the world and the life of three million years ago comes surging across my mind instead. It was when I was thus dreaming on my second day here that I found a wonderfully perfect specimen of the very first dog in America, the Procynodictis. That was worth finding.”

“Dogs as early as the Washakie formation!” exclaimed Perry in surprise. “I thought dogs were as new as bears!”