Seismosaurus

Seismosaurus halli

  • Pronounced:  Size - moe - Sore - us

  • Diet:  Herbivore (Plant-Eater)

  • Name Means:  "Earthquake Lizard"

  • Length:  150 feet (45 m)

  • Height:  40 feet (13 m)

  • Weight:  100 tons (90,000 kilos)

  • Time:  Late Jurassic - 150 million years ago

Fossil remains for this Dinosaur have been found in SouthWestern United States

Are you ready for this monster? Seismosaurus was the longest dinosaur ever discovered - maybe. Not all of it has been found, so this size is only a guess that it based on the giant bones discovered so far.

An interesting fact about Seismosaurus is that it was found with over 200 gastroliths; a particularly large one of these may have caused its death when it may have lodged in its throat and blocked its airway.

Seismosaurus would have looked very much like a large Diplodocus, and in fact, may not have been much taller than a more modestly sized Diplodocus. Its legs were short relative to its total body length - estimated to have been as much as 180 feet (54 m), depending on the number of caudal vertebrae.



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