And before horses... what ? How did people travel ? By foot ? Nooo, they rode dinosaurs ! (duh). And of course, prize mounts were tranquil ones, that didn't try to eat them, fairly strong and fast, though. So, well, here's an iguanodon in it's saddle.

If you didn't knew, the Iguanodon was an herbivore dinosaur, that lived pretty much in inferior Creataceous, he weighted 4 tons and was 5 meters high (what kind of monsters grew back then ???) and between 6 and 10 meters long.