Easy way to tame a procoptodon:

1.Build 4 wooden signposts

2. find a procoptodon.

Wherever procoptodons are, Spino’s or rexes are nearby.

3. Find a safe place (volcano crater, your base, cliffs)

4. Put down three sign posts

5. Use an Argy to carry the Procoptodon to the signposts.

5. KO with tranqs.

6. Feed rare mushrooms and Narcotics

Boom! Now you have a prehestoric kangaroo!