What is the first nearly complete dinosaur skeleton discovered?

A duckbilled dinosaur, "Hadrosaurus foulkii" roamed the forests and swamps along the bays of New Jersey's ancient seacoast.

Hadrosaurus is a famous dinosaur because it was the most complete dinosaur skeleton unearthed anywhere in the world when it was discovered and scientifically documented in 1858. It was also became the first mounted dinosaur skeleton displayed anywhere in the world in 1868!

The "Hadrosaurus foulkii," the first nearly complete dinosaur skeleton to be discovered virtually intact anywhere in the world, was unearthed in October, 1858, in a marl pit in Haddonfield, Camden County, by William Parker Foulke, a member of the prestigious Academy of Natural Sciences of Philadelphia.