Armored dinos may have used their tail clubs to bludgeon each other
Broken spikes on a fossil dinosaur’s flanks point to sparring rather than tyrannosaur bites
![Two heavily armored dinosaurs swing long tail clubs at one another, crossing against the sunset on a strangely barren landscape](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2022/12/120622_jb_ankylosaur-battles_feat.jpg?fit=1030%2C580&ssl=1)
Zuul crurivastator (illustrated) and other armored dinosaurs may have battled for social dominance using their bony tail clubs.
© Henry Sharpe