ankylosaur

noun

1. Synonym of ankylosaurus, Ankylosaurus magniventris, a herbivorous dinosaur of the Cretaceous period notable for its heavy armor and clublike tail.
2. Synonym of ankylosaurian, any member of the suborder Ankylosauria, herbivorous dinosaurs notable for their armor in the form of bony osteoderms.

   “In a study published Wednesday in Nature, Chilean researchers announced the discovery of a new species of ankylosaur, a family of dinosaurs known for their heavy armor, from subantarctic Chile.”