Items you need. Bola x 1 club x 1 raw fish meet x 42 spear x 1 step one bola it step two knock it out with club step three hunt mega piranha and coelacanth with spear (also bring axe and pickaxe if your spear breaks)with fish meat feed baryonyx till it is tamed. And voila now you have a tamed baryonyx.