Recently and legally collected in private property along the Connecticut River Valley. This is the fossil impressions of a Theropod (raptor) that existed some 200 Million Years Ago. While the tracks themselves are called Grallator Tracks, they were likely created by Podokesaurus Holyokensis. The reason why the tracks have a separate name is because the tracks were discovered before the first remains of Podokesaurus.
These tracks are polished to increase visibility. Polish may he washed off with a little elbow grease.