Enormous prehistoric armored mammals called glyptodonts swung their spiked tails just as athletes swing tennis rackets and baseball bats, according to a new study. These massive animals even had a ...

Everybody knows that Stegosaurus had four tail spikes. The formidable weapons this odd dinosaur sported were some of its most prominent features. Yet, when Stegosaurus was new to science, it seemed as ...

The discovery of the dinosaur remains reveals the earliest known ankylosaur with extreme armour and a possible tail weapon 30 million years earlier than previously thought. Scientists have unearthed ...