Baryonyx is a genus of theropod dinosaurs which lived in the Barremian stage of the Early Cretaceous period, about 130–125 million years ago. The mouth shape of this dinosaur was very similar to that of a crocodile, and it had a large claw, about 31cm long, probably on its thumb. Baryonyx may have crouched on river banks or waded into shallow water to hook fish with its claws. It was also a scavenger. Baryonyx grew to approximately 25 feet (7.6 meters) long and weighed about 1.5 tons.