
Walking with Dinosaurs: Shortbites
Featured species are the opthalmosaurus and the ornithocheirus.

Featured species are the opthalmosaurus and the ornithocheirus.

Featured species are the coelophysis and the diplodocus.

A look at the scientific work which went into the reconstruction of Big Al the Allosaurus.

Scientists study the perfectly preserved remains of an adolescent allosaurus they call "Big Al."

Nigel Marven is on the trail of the dinosaur with the biggest claws of all time.

Imaging technology and scientific collaboration depict dinosaurs in the wild.

Dinosaurs are extinguished by an asteroid in prehistoric Idaho.

Dinosaurs thrived during springtime when ferns and evergreens reappeared in the polar forest.

Prehistoric flying reptiles.

Large marine reptiles command the seas during the late Jurassic period.

Colorado was once a desert home to dinosaurs.

The life of the first reptilian carnivores on Earth, told through computer animation.

By 280 million years ago, a new group of animals and plants took over - the reptiles.

Next it was the turn of the fish to grow larger and take over the role of top predator.

550 million years ago, our ancient ancestors evolved teeth and all manner of new weapons.

Mammoths meet danger crossing the Alps, but the biggest dangers are awaiting their return.

Revealing the exotic, oversized creatures that inhabited South America one million years ago.

The beginnings of mankind can be traced back 3.2 million years to Ethiopia.

Going back 25 million years to the time of the indricothere, which was the size of a rhino.

A pregnant basilosaurus is forced to kill the young of a smaller whale.