Step one get long neck rifle get at least 70 darts get more if your aim is bad

Step two find rex there not that hard to find just go to creater maps on dododex and look for tyranasousas rex and

Step three find a cliff it can't climb start shooting it and it will leave and come back a few times but u should be able to tell if it's coming back for u or not u may have to chase it don't start tranqing if if got low ho or attacking a brouto

Yours truly stonewall206

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