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.

"What do you need?" [...] "To business, then. Witches three have this land with slumber plagued. Agatha, the Hungry, lays in wait near her great cauldron, in search of heroes to eat. Cruel Hylda has taken winter's crown for her own. Wherever there are lovers and lords, you shall find the beguiling Eriette. Whosoever is brave enough to defeat them shall break the curse upon the Realm, and for that service, earn a boon from my ever-full treasury."

Sleeping Beauty (Blue-Black) - "Striking a deal with the three witch sisters, Agatha, Hylda, and Eriette, a massive sleeping spell, known as the Wicked Slumber, spread throughout Eldraine and turned the tides of the invasion. [...] After the Phyrexians were defeated, the Wicked Slumber remained and grew in power. [...] Talion calls on Kellan, a boy from the Boundary Lands, to go retrieve the three gifts they gave to the witch sisters (the soul cauldron, the winter crown, and the tempting apple) to break the spell."

Little Red Riding Hood (Red-Green) - "The witch Agatha was gifted a magical cauldron by Talion for her role in creating the Wicked Slumber."

The Snow Queen (White-Blue) - "As a gift for helping create the Wicked Slumber, Hylda receives a crown of wintery power from Talion capable of conjuring blizzards, snow, and ice."

Snow White (White-Black) - "Meanwhile, the witch sister Eriette uses the charmed apple that Talion gifted her to maintain the curse of the Wicked Slumber long after the invasion was repelled."