Not all stegosaurids had thagomizers, but for those that did, like Stegosaurus and Kentrosaurus, fossil evidence suggests they were verrry effective weapons.

并非所有的剑龙科动物都有触骨器，但对于那些有触骨器的动物， 如剑龙和肯特罗龙，化石证据表明它们是非常有效的武器。