Ankylosaurs are armored dinosaurs most-closely related to stegosaurs. They’re most well known for their broad feet, weaponized tails, and being the most hardcore of all herbivorous dinosaurs. Now, a newly discovered species called Stegouros elengassen is rewriting what we know about these ancient animals.
Stegouros elengassen, unearthed in Chile, had a strange flattened tail that looked like a fern frond – a feature never seen before in an ankylosaur dinosaur