Stegosaurus

I defined this in 2020 and nobody has defined Stegosaurus yet. I am disappointed. Anyways, a Stegosaurus is a dinosaur with many bony plates along its back. It also has spines on its tail. Don't let ASDFMovie fool you with the one "I am a Stegosaurus" scene, as that more closely resembles an Apatosaurus.

Teacher: The stegosaurus lived in the Mesozoic era--
Student: i don't care this is the cenozoic era lol

Stegosaurus armatus

a type of dinosaur in its full name. It also means armored plated lizard

We found a fossil of a Stegosaurus armatus.