Prince George's County Department of Parks and Recreation
Dinosaur Park
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Explore Prehistoric Maryland


Maryland, 110 million years ago

In 1858, African-American iron miners working near what is now Dinosaur Park discovered the first dinosaur fossils found in Maryland. Fossils are still found at the Park today. Since 2009, this irreplaceable natural resource has been preserved for scientific study and public educational programs.

Dinosaur Park is an outdoor laboratory where the public can work alongside paleontologists to help uncover the past. Thousands of fossils discovered by visitors have been collected and cataloged to date. 

Select a topic below to explore what we know about prehistoric Maryland, and how we know it.

Where in time is Dinosaur Park?
What was Maryland like during the early Cretaceous?
What animals and plants lived at Dinosaur Park?
Where do fossils come from?
How do we identify incomplete fossils?