Researchers conducted a controlled explosion at a quarry, discovering one of the longest dinosaur trails ever found. It stretches more than 700 feet long and dates back at least 166 million years. #cnn #dinosaurtrail

Extinct Era on Instagram: "Spinosaurus was one of the largest predators of the mid-Cretaceous, a semi-aquatic hunter that fed on fish and shoreline prey in what is now North Africa. It shared this environment with Carcharodontosaurus, a massive land-based carnivore that hunted other dinosaurs. Fossils from the Kem Kem beds show both lived in the same region, hinting at possible competition for food.  Planet Dinosaur (2011)"