Did you know horses evolved in North America? The Hagerman Horse, Equus simplicidens, was the first true horse (but its bones resemble Grevy’s zebra bones). It's the park's most famous fossil but we have over two hundred different species. From saber-toothed cat, mastodon, bear, camel, and ground sloth, to much smaller animals, the scientific study of Pliocene fossils is the key to Hagerman. Read More
Examine a fossiliferous Pliocene-aged site!
New World Horse and other wonders
Hagerman horse fossil skeletons were excavated in the early 1930s by the Smithsonian Institution. These skeletons were traded worldwide.
Other Fossils and New Discoveries
Lontra weiri lived at Hagerman over 3.8 million years ago and is the oldest known ancestor of today’s American river otters.
Sibiloi National Park is our Sister Park
Learn about Sibiloi National Park in Kenya. Sister Park to Hagerman Fossil Beds National Monument.
Become a Hagerman Fossil Beds Jr Ranger.
If you are between the ages of 6 and 100+ years old, we invite you to become a Hagerman Fossil Beds Junior Ranger.