Easily killable with a wyvern. Lightning and poison easiest down to longer range in attack. Just hover above and light it up :) killed my first today and it didn't touch me once. Just remember to watch stamina ;)
The fastest way for your entire tribe to rage quit is to have one of these randomly spawn in the center of your base. Oh, that doesn't happen? Think again, literally just did. What the actual f*** Ark??!!!
Can be killed with 2 high lvl gigas mate boosted. Our 2 highest gigas have 225% dmg and melt titans in about a minute. Official server.
Just stay away from the back leg stomp as it can enrage a giga quickly due to speed of attack.
I was on scorched with my level 174 raptor I got it stuck in a hole and sat there for 5 hours hitting it but when it was on 2k Heath my raptor got hit so I grabbed my army of 60 argentavis and sent them all at it all the argentavis died (except one baby that was at my base) so I got my jerboa and threw it at it one shot. Your Reginald (jerboa) killed titanosaur lvl 4.