Mamenchisaurus is a sauropod dinosaurgenus including several species, known for their remarkably long necks which made up half the total body length. It is known from numerous species which ranged in time from 160 to 145 million years ago, from the Oxfordian to Tithonian ages of the late Jurassic Period of China, and the largest species may have reached 35 m (115 ft) in length and possibly weighed 50 to 75 tons.

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Fact file

  • Pronounced: mah-men-chi-sore-us
  • Meaning of name: Mamenchi lizard
  • Length: 22m
  • Diet: herbivorous
  • Food: Stegosaurus, Diplodocus and others
  • When it lived: Late Jurassic (156 – 144 million years ago)
  • Found in: Peoples Republic of China

Taxonomic details

  • Taxonomy: Dinosauria, Saurischia, Sauropodomorpha, Sauropoda, Eusauropoda, Mamenchisaurus
  • Named by: Young (1954)
  • Type species: constructus