Here's how to tame a Velonasaur effectively(at least thats how i tamed 2 of em):

You will need:

•A Crossbow or longneck rifle( i got mines w crossbow)

•About 15-30 tranq arrows (idk how bad is your aim or how many it needs in a rifle, but get a substancial amount)

•(optional) a very tanky dino or a window to serve as cover

How to knock:

1- find one in an not-so-open space( the more places to cover the better)

2- get some distance, although moving around it may seem a good idea, it can turn pretty quickly in turret mode.

3- Play the Trench game where:

-you shoot it

-it tries to shoot you

-you hide

-he moves closer to you

-you run

-repeat

Doing so with covers will let you have some time to react before it shoots you.

Note:you will take damage, thats kinda unfortunate, but with the covers it lets you eat some food or potions

When it starts to run away, run towards him, jumping whenever you shoot

From this point you probably already know what to do: shoot, hide, repeat, run to him, knock him, and feed him.

And then VOILÁ, you just got the most exciting dino i have ever tamed so far. ENJOYYY!!!

-PHANTOMMAGIUS