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Prehistoric Life

How long was Leaellynasaura amicagraphica?

An adult Leaellynasaura amicagraphica had a body length of about 60 cm (2 ft).

What is measured: adult, estimated body length

Leaellynasaura amicagraphica (60 cm) drawn to scale beside a bowling pin (38.1 cm) and an adult person (1.7 m)
Drawn to scale, from left to right: Bowling pin (38.1 cm), Leaellynasaura amicagraphica (60 cm) and Adult person (1.7 m).

Compare

How big is that, really?

  • About 1.6× the height of a bowling pin
  • As long as about 7 credit cards end to end
  • About 35% of the height of an adult person
  • About 30% of the height of a doorway
  • About 4.1× the height of a smartphone

Learn

Facts about Leaellynasaura amicagraphica

Leaellynasaura lived in polar Australia, where it endured months of darkness during the Cretaceous winter.

Source: Museum Victoria, Leaellynasaura amicagraphica; Australian Geographic, Dinosaurs of the Polar Forests

Prehistoric Life

NameSizeCompared with Leaellynasaura amicagraphica
Paradoxides davidis45 cm (1 ft 6 in)0.75×
Archaeopteryx50 cm (1 ft 8 in)0.83×
Yi qi60 cm (2 ft)same size
Thylacinus cynocephalus60 cm (2 ft)same size
Leaellynasaura amicagraphica60 cm (2 ft)this page
Acanthostega gunnari60 cm (2 ft)same size
Meganeura monyi70 cm (2 ft 4 in)1.2×
Pulmonoscorpius kirktonensis70 cm (2 ft 4 in)1.2×
Confuciusornis sanctus70 cm (2 ft 4 in)1.2×
Microraptor gui77 cm (2 ft 6 in)1.3×

Test your sense of scale

Which is bigger: Leaellynasaura amicagraphica or Archaeopteryx?

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