Build a trap out of 4x3 stone foundations and 2 stone doors high, then build a ramp on one side so that it can walk into the trap and can’t get out. Then kite one over the trap so it walks into it using a wyvern as they don’t get affected by the fear roar. Spinos also work because they can walk over the two wall high walls.
It's over Anakin, I have the high ground!
You underestimate my power.
Don't try it...
It really is that simple though, they can't reach you or your flier on a big enough rock, so if you don't want to make a trap you can just shoot down from a rock or cliff once the carnos are dealt with. Be ready for a goose chase once it starts running.