Dinosaur footprint found in rocks onsite at Valley Forge National Historical Park in 2017.
Of the remnants of the past that have been unearthed throughout Montgomery County, most residents are understandably familiar with those from the American Revolution. But as Stacker discovered in its state-by-state search for dinosaur fossils, the local turf holds treasures much older than that.
In compiling a list of what creatures left markers in which areas of the U.S., Stacker consulted the Paleobiology Database (PBDB). This online resource is a repository of fossil records from global research institutions…