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Prehistoric Life

How long was Deinocheirus mirificus?

An adult Deinocheirus mirificus had a total length of about 11 m (36 ft).

What is measured: adult, total body length

Deinocheirus mirificus (11 m) drawn to scale beside a 20-foot shipping container (6.06 m) and a city bus (12 m)
Drawn to scale, from left to right: Shipping container (20 ft) (6.06 m), Deinocheirus mirificus (11 m) and City bus (12 m).

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How big is that, really?

  • About the same length as a city bus
  • About 1.8× as long as a 20-foot shipping container
  • About 2 would fit end to end along a tennis court
  • About 4 would fit end to end along an Olympic swimming pool
  • About 9 would fit end to end along a football (soccer) pitch

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Facts about Deinocheirus mirificus

Once known only from enormous arms, Deinocheirus was later shown to have a tall back, broad ducklike bill, and a deep tail.

Source: Nature, The gigantic ornithomimosaur Deinocheirus; Korea Institute of Geoscience and Mineral Resources, Deinocheirus

Prehistoric Life

NameSizeCompared with Deinocheirus mirificus
Therizinosaurus cheloniformis10 m (33 ft)0.91×
Hatzegopteryx thambema10 m (33 ft)0.91×
Amargasaurus cazaui10 m (33 ft)0.91×
Tarbosaurus bataar10 m (33 ft)0.91×
Elasmosaurus platyurus10.3 m (34 ft)0.94×
Kronosaurus queenslandicus10.5 m (34 ft)0.95×
Deinocheirus mirificus11 m (36 ft)this page
Suchomimus tenerensis11 m (36 ft)same size
Mosasaurus hoffmannii12 m (39 ft)1.1×
Saurolophus osborni12 m (39 ft)1.1×

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