78.3/79.0 = stegosaurus dossier on The Island Maps!

There are many good places to find and kill stegos and those places are beaches with lots of trees and jungles because due to its large body it can easily get stuck.
P.S. Works for taming too

don't hit a stegosaurus unless you are away from your house

Dont hit it and it wont hit you

Its not the best idea to attack them with swarms of little guys like the dilos or dimorphs. They have wide attacks, deal alot of damage, and take a beating. I lost my whole squad to one. But I found out that they can easily be killed by a baryonyx if you lure it to the water where the Bary can use its stun attack. After its stunned just stab it with a pike and use the stun attack whenever it snaps out of it.

There are multiple stegos on herbivore island in the bottom right of the map (But probably in the top right because I always mix up the location of herbivore island and dead island)

The best way to tame a stego is to find one stuck and helpless between some trees. Then they won't attack you and you can knock it out pretty easily.