Ankylosauridae is a family of armored dinosaurs within Ankylosauria, and is the sister group to Nodosauridae. The oldest known ankylosaurids date to around 122 million years ago, and the clade went ex
Euoplocephalus tutus RTMP
Skull of first known ankylosaurid specimen, belonging to Ankylosaurus
Club of indeterminate ankylosaurine, CMN 349
Gastonia and other polacanthine dinosaurs have uncertain placement, possibly within Ankylosauridae