Stegosaurus???
Stegosaurus had bony plates on its back and tail.
where bony plates growth zone is found in..
There were several. You're probably thinking of Stegosaurus, the Roof Lizard, but there were also Ankylosaurs and Saltasaurs and Spinosaurs with back plates. Of course there was also an ancient reptile -- but not a dinosaur -- with a plated back: the turtle.
I( think they are called scuta
Ankylosaurus.Oh, and dinosaurs rock. I know who you are so agree or I will set my dinosaur army on you.
Scales
Stegosaurus had 17 bony plates on its back. The plates were arranged in two rows, one one each side of the spine, and rather than the plates being directly across from each other, they alternated, with a plate on one side, then a plate on the other side, and then a plate on the first side again. In addition to plates, they had four bony spikes called thagomizers at the end of the tail.
a worm
The thin bony columns are called trabeculae - flat plates with a lattice-like network of thin, bony columns lined with endosteum.
A burrowing animal covered with bony plates that act as armor is called an armadillo. In Spanish, the word "armadillo" means "little armored one".
Ankylosaurs are covered in bony plates, which are effective protection against predators. Some had bony tail clubs that could be used as weapons, too.
Are you referring to a bulky, short legged herbivorous dinosaur covered with bony knobs that were used as protective armor? If so, then you are thinking of some type of ankylosaur. Of course, the most famous ankylosaur is Ankylosaurus, but any type of ankylosaur would fit the above description.