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Prehistoric Life

How long was Mosasaurus hoffmannii?

An adult Mosasaurus hoffmannii had a total length of about 12 m (39 ft).

What is measured: Adult, total body length

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

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How big is that, really?

  • About the same length as a city bus
  • About 50% of the length of a tennis court
  • About 2× as long as a 20-foot shipping container
  • About 4 would fit end to end along an Olympic swimming pool
  • About 8 would fit end to end along a football (soccer) pitch

Learn

Facts about Mosasaurus hoffmannii

Mosasaurus was a marine lizard rather than a dinosaur, and its powerful tail provided most of its swimming thrust.

Source: Natural History Museum — Mosasaurus; Encyclopaedia Britannica — Mosasaur

Prehistoric Life

NameSizeCompared with Mosasaurus hoffmannii
Kronosaurus queenslandicus10.5 m (34 ft)0.88×
Deinocheirus mirificus11 m (36 ft)0.92×
Suchomimus tenerensis11 m (36 ft)0.92×
Mosasaurus hoffmannii12 m (39 ft)this page
Saurolophus osborni12 m (39 ft)same size
Mapusaurus roseae12.2 m (40 ft)1×
Brachiosaurus altithorax13 m (43 ft)1.1×
Titanoboa cerrejonensis13 m (43 ft)1.1×
Livyatan melvillei13.5 m (44 ft)1.1×
Giraffatitan brancai13.5 m (44 ft)1.1×

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