An good way on how to tame a carcharodontosaurus in ark ultimate mobile edition is to breed 2 rexes, take the egg to the carcharodontosaurus and hatch it by spending 5 keys. After that take the baby and kill it, then feed it to the carcharodontosaurus. Then you can travel through and kill stuff. The best biome is the arctic in the island since there is yutys and stuff. Thats how and now have fun with a blood thirsty dino