Hadrosaurus Foulkii Leidy Site

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Hadrosaurus foulkii Leidy Site
NHL Marl Pit 2.JPG
Marl pit at the site, in which the bones were found
Hadrosaurus Foulkii Leidy Site is located in Camden County, New Jersey
Hadrosaurus Foulkii Leidy Site
LocationHaddonfield, New Jersey, USA
Coordinates39°54′34.1″N 75°1′40.24″W / 39.909472°N 75.0278444°W / 39.909472; -75.0278444Coordinates: 39°54′34.1″N 75°1′40.24″W / 39.909472°N 75.0278444°W / 39.909472; -75.0278444
NRHP reference #94001648
Significant dates
Added to NRHPOctober 12, 1994[1]
Designated NHLOctober 12, 1994[2]

Hadrosaurus foulkii Leidy Site in Haddonfield, Camden County, New Jersey, is where the first relatively complete set of dinosaur bones were discovered in 1838, and then fully excavated by William Parker Foulke in 1858. The dinosaur was later named Hadrosaurus foulkii by Joseph Leidy. The site lingered in obscurity until 1984 when a local Boy Scout from Troop 65, Christopher Brees, as part of an Eagle Scout project researched the site and generated publicity, eventually leading to the species being designated the official dinosaur of New Jersey.[3][4] The site is now a small park known as "Hadrosaurus Park" and is accessed at the end of Maple Avenue.[5]

According to a plaque placed at the site by the Academy of Natural Sciences, the site was part of the John Hopkins farm in 1858. Current information from the Academy states that Foulke unearthed 35 of an estimated 80 bones from the Hadrosaurus, which is believed to have been herbivorous, 7 meters in length, and weigh 2.5 tons. It lived during the Cretaceous Period, 73 million years ago.[6]

See also[edit]


  1. ^ "National Register Information System". National Register of Historic Places. National Park Service. January 23, 2007.
  2. ^ "Hadrosaurus Foulkii Leidy Site". National Historic Landmark summary listing. National Park Service. June 23, 2008.
  3. ^ "The Hadrosaurus Foulkii Leidy Site". South Jersey Explorer. July 23, 2012. Retrieved April 7, 2015.
  4. ^ "Hadrosaurus Foulkii Leidy Site - Haddonfield, NJ - Eagle Scout Project Sites". Waymarking. December 19, 2010. Retrieved April 7, 2015.
  5. ^ "World's First Dinosaur Skeleton Discovered Here". Roadside America. Retrieved April 7, 2015.
  6. ^ Hadrosaurus foulkii, Academy of Natural Sciences. Retrieved February 24, 2012.

External links[edit]