In the early 1990s blockbuster movie Jurassic Park, the characters knew a dinosaur was approaching because the ground shook with every step the animal took.
The name Seismosaurus actually means “Earthquake Reptile,” because this dinosaur was large enough that it may actually have shook the ground as it walked.
An almost unimaginably large animal, Seismosaurus lived during a time when the Earth’s warm temperatures encouraged rapid plant growth. This helped to insure an ample supply of food.
Seismosaurus probably used a rake-like set of teeth to quickly clear the leaves off of nearby trees, and swallowed them without chewing. Alongside the bones of Seismosaurus were also found many small round stones that Seismosaurus swallowed to help grind up its food.