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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


Kenneth Branagh
Paul Bybee
Rebecca Hanna
Octavio Mateus
Scott Rogers
Dale Russell
Michael Stoskopf
Tim Williams
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

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