My Story: My spinosaurs came in unexpectedly. Spinebreaker was tamed by leading him between two rocks, and pelting him with tranq darts! Skullcrusher was knocked out with darts on the back of a baryonx! The female was tamed with bio bin and the male soothe balm!
To be strictly honest the spinosaur is one of the best mounts in game if you are even wble to obtain one be sure to make it a high level one they are very squishy at first so go around killing small dinos before attacking big prey
TLC patch coming in March 2018 to add the ability to swap between 2 legged mode (faster attacks and ability to attack with claws) and 4 legged mode (Faster movement), as well as increased turning radius, movement speed, damage, and health regen while in water and for a short time after leaving it. Like so people can see!