The best place to find theese is herbivore island /small tip:NEVER LEAVE UR DINOS ON AGRO THERE/
I suggest a raft to get there, bring some Dino’s too
There’s at least a single bronto there, but usually there’s two.
Bring at least a 500 berries, at least, plz do more tho
I also say u get some major soothing balm, and at least 60 tranqs,
I tamed one in about 10 mins on herbi island. 5 mins of spamming tranq arrows and 5 of feeding it carrots with a minor soothing balm. Pretty easy tame for mobile. (Easy mode single player bc I'm too lazy to grind xp or sit round for 20 hrs watching a bronto tame 0.001% at a time)
These are easy to knock out, Just get a bow and a bunch of trans arrows, Then keep shooting it and running away so it wont hit you, Then feed it mejoberries and then wait... Theres your bronto thanking you because you tamed it.
An easy taming technique.(map: The Island)
Go to the herbivore island (right bottom corner of the screen). There's a big entrance inside of a hill, with a lot of free space. You have to block the entrance so that your brontosaurus can't escape. You can rather wait until it spawns inside of your trap or lure it. When it's inside and can't get out,take the high ground and tranq it. It'll be way easier since it can't hit you with it's tail, after that you can simply use berries to tame it. I'm writing this while taming a bronto, it works.
Bronto are slow just shoot shocks or tranqs and walk backwards. Use large rocks to jam them they struggle to cross non flat terrain. Use EXCEPTIONAL kibble to tame high levels or you will be waiting 5-10 min even from starve using berries or veg.
Bronto can carry as many people as you like with or without platform saddle aslong as weight limit is not exceeded. (There is no seat for passangers to mount)