At around 40 metres (110 feet) this is a very long dinosaur indeed, as long as about nine family cars parked end to end, or half the length of a football pitch. This makes Seismosaurus the longest animal to have ever lived. When a herd of these giants are on the move, you can guarantee that the front of the group will be a long way ahead of the back.
Meaning of name tai Family Diplodocidae Period Late Jurassic
Special features Longest dinosaur
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