The spikes at the end of a stegosaurus tail are called a thagomizer. This term originated and was made popular by a cartoonist named Gary Larson. The term was introduced in 1982 and has been the term for the dinosaurs’ tail ever since.
100 Mind-Blowing Stegosaurus Facts
Less time separates the existence of humans and the Tyrannosaurus rex than the T-rex and the Stegosaurus.