Press Kit
Gates of Lodore
NPS Photo
Dinosaur National Monument was established on October 4, 1915, as an 80-acre monument to preserve the outstanding fossil resources at the dinosaur quarry north of Jensen, Utah. In 1938 the monument was enlarged to 203,885 acres. This proclamation vastly expanded the land base to include the river corridors and adjacent viewsheds for the major canyons of the Green and Yampa Rivers. On September 8, 1960 minor revisions to the boundary enlarged the monument to 211,141.69 acres, for the construction of entrance roads and administrative sites. Dinosaur Significance |
Did You Know?
Dinosaurs became extinct 65 million years ago, but lizards are still a common sight at Dinosaur National Monument. The small, inquisitive reptiles have endured on Earth for more than 300 million years, far outlasting their giant cousins.