January 26, 2024
One fossil is upending our understanding of Ankylosaur behavior

For paleontologists trying to tease hints from fossils mangled by geologic time, insights into the activities of a particular dinosaur are precious.
Consider the ankylosaur, a four-legged Cretaceous plant-eater known for its armor plates and hefty club-like tail. You’d be forgiven for imagining this tail club was well-suited for kneecapping any would-be predator like T. Rex. Not out of the question, says one expert, Dr. David Evans of the Royal Ontario Museum, but he suspects ankylosaurs evolved such tail clubs for a wholly different purpose—one that reveals something about how these dinosaurs spent their days.