Image for Dinosaur death trap

Dinosaur death trap

Duration: 01:45

At Cleveland Lloyd Dinosaur Quarry, over 10,000 dinosaur bones have been found jumbled together. But as the different bones were identified, something strange emerged. They found hundreds and hundreds of Allosaurus bones, and just a few of the plant eating dinosaurs - the total opposite of what you would expect. It was a mystery why the predators outnumbered their prey. What might have happened was that it was a bog area that collects small pools of water and would attract stegosaurus and other animals that would be prey for the Allosaurus. They would get stuck in the mud and be there for days. They might stink and be very attractive to an Allosaurus who would be glad to jump in there, no realising that they would become entombed themselves. The Allosaurus were probably led to their death by their noses - they couldn't ignore the stinking attraction of a carcass. When the dinosaurs got into the bog they would have mixed up a lot of the mud, hence we have a huge, huge column of bones that goes quite deep and they are all mixed up. The remains of at least 44 Allosaurus were found at this one site. It looks like this was a natural predator trap.

Available since: Tue 28 Sep 2010

Credits

Narrator
Kenneth Branagh
Expert
Paul Bybee
Expert
Rebecca Hanna
Expert
Octavio Mateus
Expert
Scott Rogers
Expert
Dale Russell
Expert
Michael Stoskopf
Expert
Tim Williams
Producer
Kate Bartlett
Executive Producer
Tim Haines

This clip is from

Walking with Dinosaurs Big Al, Big Al Uncovered

2/2 A look at the scientific work which went into the reconstruction of Big Al the Allosaurus.

First broadcast: 27 Dec 2000

Image for Big Al Uncovered Not currently available on BBC iPlayer

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.

Added. Check out your playlist Dismiss