SEISMOSAURUS FACTS
Seismosaurus may have been the biggest dinosaur ever !
It was a huge forty-five metres long, weighed up to one hundred tonnes, and could reach up to fifteen metres at its head !! It would've shaken the ground when it walked.
Scientists think that Seismosaurus is the largest animal ever discovered that has a back-bone.
But even though it was big, it was a peaceful plant-eater.
Because it was so big, Seismosaurus was probably safe from attack from any meat-eater.
So far, Seismosaurus has only been found in North America