Riker Hill Fossil Site is a 16-acre paleontological site in Roseland in Essex County, New Jersey, United States, located at the south western side of the borough at the border between Roseland and Livingston. It is one of the major sites in United States where a large number of dinosaur tracks are preserved. It was declared a National Natural Landmark in June 1971.
Originally, the site was part of a 55 acres stone quarry owned by the Kidde company called Roseland Quarry. In 1968, there was a discovery of dinosaur tracks on the quarry. With the news, a 14-year-old, Paul E. Olsen who lived in Livingston, and his friend Tony Lessa started visiting the quarry to study them. Over a period of a few years, they uncovered more than one thousand dinosaur, animal and insect tracks from the Late Triassic and Early Jurassic period.
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Address: Essex, United States
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