The theme park in Leonia's Overpeck Park is selling off its life-sized dinosaur models on Facebook Marketplace. A New Jersey theme park is preparing to shutter operations next month, and ownership is selling off its unique, historic inventory. What we know:Field Station: Dinosaurs has listed more than a dozen life-sized dinosaur models on Facebook Marketplace. In May, the Leonia theme park announced that this season would be its last. Image 1 of 3 ▼ A Facebook Marketplace listing for a life-sized triceratops model.