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Prehistoric Life

How long was Mamenchisaurus hochuanensis?

An adult Mamenchisaurus hochuanensis had a total length of about 22 m (72 ft).

What is measured: adult, total body length

Mamenchisaurus hochuanensis (22 m) drawn to scale beside a city bus (12 m) and the Statue of Liberty (93 m)
Drawn to scale, from left to right: City bus (12 m), Mamenchisaurus hochuanensis (22 m) and Statue of Liberty (93 m).

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How big is that, really?

  • About the same length as a tennis court
  • About 1.8× as long as a city bus
  • About 2 would fit end to end along an Olympic swimming pool
  • As long as about 4 20-foot shipping containers end to end
  • About 4 would fit end to end along a football (soccer) pitch

Learn

Facts about Mamenchisaurus hochuanensis

Mamenchisaurus is famous for its exceptionally long neck, which made up about half of its estimated body length.

Source: Natural History Museum, London — Mamenchisaurus; Encyclopaedia Britannica — Mamenchisaurus

Prehistoric Life

NameSizeCompared with Mamenchisaurus hochuanensis
Brachiosaurus altithorax13 m (43 ft)0.59×
Titanoboa cerrejonensis13 m (43 ft)0.59×
Livyatan melvillei13.5 m (44 ft)0.61×
Giraffatitan brancai13.5 m (44 ft)0.61×
Basilosaurus cetoides18 m (59 ft)0.82×
Sauroposeidon proteles18 m (59 ft)0.82×
Mamenchisaurus hochuanensis22 m (72 ft)this page
Apatosaurus louisae22 m (72 ft)same size
Dreadnoughtus schrani26 m (85 ft)1.2×
Lepidodendron30 m (98 ft)1.4×

Test your sense of scale

Which is bigger: Mamenchisaurus hochuanensis or Basilosaurus cetoides?

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