The tracks – left by a single acrocanthosaurus – had not been seen for more than 20 years. Footage of the find at Dinosaur Valley State Park in Glen Rose was shot by Paul Baker. He said, “Sweep away some of the dust and dirt, this is what you’ll find: dinosaur tracks.” The courses are usually under water, but a recent drought saw the Paluxy River’s level drop significantly. Experts have seized the opportunity to map and track the dinosaurs’ path before the river fills up again. Image: (Image: Paul Baker/Friends of Dinosaur Valley State Park) Texas Parks and Wildlife told reporters that while the tracks will be reburied by rain and river, the park “will continue to protect these 113-million-year-old tracks not only for today, but for future generations.” Acrocanthosaurus – which stood about 15 feet tall and weighed about seven tons – was an early cousin of Tyrannosaurus rex.