Dinosaur typal led to the red-green draft archetype, so this seemed like a good place to talk about them. Here's a breakdown of the ten two-color archetypes (with text borrowed from the box insert draft helpers, written by Jules):

Oltec Ingenuity (White-Blue Artifact Control): Buy time with blockers, removal, and life gain while you assemble an array of wondrous artifacts to take over the late game.

Echoes of the Dead (Blue-Black Descend Control): Set up to block while you fill your graveyard, then drag your opponent into the deep end with high-cost creatures, card draw, and recursive threats.

Going Down! (Black-Red Descending Beatdown): Keep your creatures growing by attacking viciously to make your opponent block or throwing permanents into the graveyard yourself. Then keep them down with creature removal.

Dinosaurs of the Sun Empire (Red-Green Dinosaur Stompy): Summon gigantic Dinosaurs to crush the opposition, supporting them with ways to make more mana or break through blockers.

Malamet Tactics (Green-White Buffs Aggro): Keep the pressure on with low-cost creatures. When your opponent tries to set up a defense, it's time to pounce by powering up your forces.

Dusk Legion Pilgrimage (White-Black Sacrifice): Sacrifice little creatures and artifacts for the glory of Aclazotz (and additional resources). Once you smell blood, seal their fate with a few larger creatures.

Pirates' Plunder (Blue-Red Artifact Aggro): Set sail with a rowdy crew and their haul of Equipment and Treasure. When those landlubbers try to stop you, fly over the top or throw their blockers overboard.

Fungal Festering (Black-Green Descend Grindy): Muck up the battlefield with sticky creatures while you fill your graveyard. Once you've descended enough to power your side up, start grinding your way through the opposing blockers.

Thousand-Moon Legion (Red-White Tapping Midrange): Launch your military campaign with lots of small creatures and artifacts, then tactically tap those resources to activate your forces and rout the invaders.

River Herald Expedition (Green-Blue Explore Midrange): Go exploring to stock your side with lands and powerful creatures, then sink your extra mana into activated abilities and card draw to drown the opposition in value.