Found in the Atlas Mountains of Morocco, Spicomellus is the world's oldest Ankylosaur and the first ever discovered in Africa. With morphology unlike any oth...
the distinctive arrangement of spike-shaped osteoderms on the tails of some stegosaurian dinosaurs. These spikes are believed to have been a defensive measure against predators.
learned a new word today
https://en.wikipedia.org/wiki/Thagomizer
You can’t leave out that Gary Larson coined it in a Far Side comic