• Camarasus skull in the cliff face, rafters on the Green River, McKee Springs petroglyphs

    Dinosaur

    National Monument CO,UT

Press Kit

Entrance to Lodore Canyon
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
Visitor Statistics
Quarry Visitor Center Background

Did You Know?

Picture of mormon cricket perched on a blade of grass.

Mormon crickets are wingless grasshoppers that swarm across roads through the summer in the western United States. These flightless insects can form such large swarms that the road appears to move and change colors where they cross.