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Prehistoric Life

How long was Edaphosaurus pogonias?

An adult Edaphosaurus pogonias had a body length of about 3.5 m (11 ft).

What is measured: Adult sail-backed herbivore, body length

Edaphosaurus pogonias (3.5 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), Edaphosaurus pogonias (3.5 m) and Shipping container (20 ft) (6.06 m).

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How big is that, really?

  • About 58% of the length of a 20-foot shipping container
  • About 3 would fit end to end along a city bus
  • About 1.8× the height of a doorway
  • About 2.1× the height of an adult person
  • About 6 would fit end to end along a tennis court

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Facts about Edaphosaurus pogonias

Edaphosaurus carried a tall back sail supported by elongated vertebral spines, but unlike Dimetrodon it was primarily herbivorous.

Source: Carnegie Museum of Natural History — Edaphosaurus; Encyclopaedia Britannica — Edaphosaurus

Prehistoric Life

NameSizeCompared with Edaphosaurus pogonias
Hieraaetus moorei3 m (9 ft 10 in)0.86×
Glyptodon clavipes3.3 m (11 ft)0.94×
Arctodus simus3.4 m (11 ft)0.97×
Megatherium americanum3.5 m (11 ft)same size
Edaphosaurus pogonias3.5 m (11 ft)this page
Ornithomimus edmontonicus3.5 m (11 ft)same size
Dinornis robustus3.6 m (12 ft)1×
Palaeoloxodon antiquus4 m (13 ft)1.1×
Deinotherium giganteum4 m (13 ft)1.1×
Mammuthus columbi4 m (13 ft)1.1×

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