I have thought of this version of the Dinosaurs deck in Ixalan Standard after checking some Dino build in MTG websites like Channel Fireball. R/G would be the traditional list but I chose Blue as the third color mainly because of the card Vizier of Many Faces which can be a board changer when it copies the creatures like Carnage Tyrant & Regisaur Alpha. It can also be a nuisance on an opposing Carnage Tyrant which basically just offers a creature trade on combat.

Here below is my first version of the deck, Temur Dinosaurs:

4 Botanical Sanctum
4 Spirebluff Canal
2 Aether Hub
4 Rootbound Crag
2 Sheltered Thicket
1 Island
3 Forest
3 Mountain

4 Carnage Tyrant
4 Drover of the Mighty
4 Regisaur Alpha
4 Ripjaw Raptor
3 Vizier of Many Faces
2 Burning Sun’s Avatar

2 Attune with Aether
3 Commune with Dinosaurs
3 Harnessed Lightning
3 Savage Stomp
2 Samut, the Tested
2 Supreme Will