Prehistoric

Ten thousand years ago, it was home to both mammoths and mastodons... 420 million years ago, it was drowned beneath an ancient sea. But where did all Chicagos dinosaurs go?

Here in Denver, 65 million years ago, Tyrannosaurus Rex fought Triceratops in a battle to the death, and the Terminator Pig savaged anything in its path

Mammoths once trampled down Fifth Avenue, sea scorpions were part of the prehistoric freak show on Coney Island, and some of the world's first dinosaurs roamed where the Giants now play.

Even millions of years ago, it was always Bigger in Texas. Scimitar toothed cats, the largest ocean-going reptile ever to exist, and armadillos as big as a car in Prehistoric Dallas.

Prehistoric Washington D.C. was full of dinosaurs, and flying reptiles with 30-foot wingspans terrorized the skies over the National Mall. That was before it was Ground Zero, site of an asteroid impact that wiped out all life...

Sabertooth cats once prowled LA just blocks away from the Oscars Red Carpet. Duckbilled dinosaurs basked in Californias famous surf-until they were attacked by fast and agile super-predators. And underneath it all, the ground moved