Once you do the raptor killing poursuit they give an acendent galli saddle
Gallimimus
The Gallimimus is extremely fragile, but its power to outrun everything gained place in the hearts of survivors who look for a mount to explore and scout the island by land, or just want to evade battle. This creature is unable to harvest most resources or attack enemy, but its reputation as fastest creature sure make it a valuable mount.

How ARK players tame and knock out the Gallimimus: what to feed it, what to knock it out with, and how to keep it safe.
Il faut mettre environ 12 flèches tranquillisante sur le Gallimimus et quand il est inconscient lui donner environ dans les 1500 baies ( Azul Berry narco Berry Tinto Berry mais jamais de Stim berry) ça fait diminuer la torpeur
For the quest just tame a level 1
Tame a best galiminus later
Prenez un dinosaure comme par exemple, un Argentavis amenez-le à votre basse. Prenez des narcotiques et alimentez-le avec sa nourriture préférée.