- Self - Narrator: [opening narration] Texans like to say that everything's bigger in Texas. In Dallas, that has been true for millions of years. One of the biggest creatures on the planet walked these streets. But it wasn't big enough to survive a vicious attack. Massive monsters ruled, even when the city was under an ocean and crude oil was cooking beneath it's waters. From the cat's that ran a chop shop, to the prehistoric Armadillo's that could total a car, this is the story of what lived, fought, and died in prehistoric Dallas.