My Pteranodon was able to kill spino and rexes, pretty much everything except alpha's and titano,anyway, there was an high LvL Spino, since i kill all the spino that are near my base or in the way of my route for metal grinding, i attacked it, my pteranodon had 500 health, it took 100 health away, i was like hell nah u can take on those alpha trike!i survived