‘Haddy,’ America’s First Dinosaur, Returns to Philadelphia’s Academy of Natural Sciences

“Haddy,” the Hadrosaurus Foulkii remains discovered in a marl pit at the edge of Maple Avenue in the 1830s, isn’t just a symbol of local history, it’s an ambassador of the sciences, paleontologists say. The mounted skeleton makes its return to the public for the first time in half a decade. Sign in or subscribe to continue reading… 

By Matt Skoufalos | July 18, 2025