Allosaurus
Allosaurus was a theropod dinosaur from late Jurassic North America and Portugal. Allosaurus was a large dinosaur that was 28 to 39 feet long, 7 to 13 feet high, and weighed 1.5 to 4.5 tonnes. It had a large 3 foot skull with horns/crests over its eyes. It had powerfull 3 fingered arms. It walked on 2 legs. It also had a long slender neck about as long as its skull. The results on one Allosaurus specimen called "Big Al" reveal two extraordinary things about this predator:
1. A weak bite. Allosaurus had relatively weak jaw muscles. It had a bite force of only 200 kilograms, which is the same as a leopard's. So it was no bone crusher, like T. rex.
2. A strong skull: Despite its relatively weak bite, Allosaurus'skull was extremely good at transmitting force along its length.'With more openings and much lighter than T. rex's head, it was structured to carry tremendous levels of stress, as much as 6 tonnes.
This shows that Allosaurus would have used its head like a hatchet, using its strong neck muscles to ram its teeth from its upper jaw into the body of its prey. This method of attack when shown isn't pretty, nor clinical, but its ruthlessly efficient.
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