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Prehistoric Life

How tall was Maiasaura peeblesorum?

An adult Maiasaura peeblesorum stood about 2.5 m (8 ft 2 in) tall.

What is measured: adult, standing height

Maiasaura peeblesorum (2.5 m) drawn to scale beside a doorway (2 m) and a 20-foot shipping container (6.06 m)
Drawn to scale, from left to right: Doorway (2 m), Maiasaura peeblesorum (2.5 m) and Shipping container (20 ft) (6.06 m).

Compare

How big is that, really?

  • A little taller than a doorway
  • A little taller than an adult person
  • About 6.6× as tall as a bowling pin
  • About 41% of the length of a 20-foot shipping container
  • About 21% of the length of a city bus

Learn

Facts about Maiasaura peeblesorum

Maiasaura fossils provided important evidence that some dinosaurs nested in colonies and cared for their young after hatching.

Source: Museum of the Rockies — Maiasaura; Encyclopaedia Britannica — Maiasaura

Prehistoric Life

NameSizeCompared with Maiasaura peeblesorum
Megaloceros giganteus2.1 m (6 ft 11 in)0.84×
Entelodon magnus2.1 m (6 ft 11 in)0.84×
Daeodon shoshonensis2.1 m (6 ft 11 in)0.84×
Triceratops horridus2.4 m (7 ft 10 in)0.96×
Parapuzosia seppenradensis2.5 m (8 ft 2 in)same size
Pterodaustro guinazui2.5 m (8 ft 2 in)same size
Maiasaura peeblesorum2.5 m (8 ft 2 in)this page
Arthropleura armata2.6 m (8 ft 6 in)1×
Mammut americanum2.9 m (9 ft 6 in)1.2×
Hieraaetus moorei3 m (9 ft 10 in)1.2×

Test your sense of scale

Which is bigger: Maiasaura peeblesorum or Hieraaetus moorei?

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