Greta because they have reduced weight for recourses . To tame one, get a pteranodon to hit it but stay a safe distance. You could also get 4-5 dinosaur gateways (stone works best) and get two doors to trap it, and make sure to spread out the gateways so you can still hit it with tranqs. Feed it (prime meat is best for taming effectiveness early on) and maybe get a fully imprinted one to get the stat boost effects and make your travels easier!