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.
Without a bit more detail - the first animal that came to mind when I saw the question is a Stegosaurus.
Stegosaurus had bony plates on its back and tail.
Stegosaurus???
Reptile: Hard and scaly, with scutes or bony plates Amphibian: Soft, smooth, or warty, possibly moist skin
where bony plates growth zone is found in..
a worm
Ankylosaurs are covered in bony plates, which are effective protection against predators. Some had bony tail clubs that could be used as weapons, too.
techniqly,a snake is not a bony fish,a snake is a reptile.:)<3 riah
Ostracoderms were ancient fish with an an armor of bony plates. However, your question is very muddled and therefore we can not answer it properly.
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.
Their 'skin' is made of a layer of bony plates (not really skin then). These bony plates are really just modified scales. They cannot be shed.
Yes