Extras

    Video thumbnail: NOVA Spinosaurus vs. Alligator

    NOVA

    Spinosaurus vs. Alligator

    A tame alligator named Bubba betrays the secrets of the largest predator that ever lived.

    Spinosaurus vs. Alligator

    Video thumbnail: NOVA Bigger Than T. rex Preview

    NOVA

    Bigger Than T. rex Preview

    Meet Spinosaurus—the lost killer of the Cretaceous and the world’s larger predator ever.

    Bigger Than T. rex Preview