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Prehistoric Life

How tall was Kelenken guillermoi?

An adult Kelenken guillermoi stood about 3 m (9 ft 10 in) tall.

What is measured: adult, standing height

Kelenken guillermoi (3 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), Kelenken guillermoi (3 m) and Shipping container (20 ft) (6.06 m).

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How big is that, really?

  • A little taller than a doorway
  • About 1.8× as tall as an adult person
  • About 50% of the length of a 20-foot shipping container
  • About 7.9× as tall as a bowling pin
  • About 25% of the length of a city bus

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Facts about Kelenken guillermoi

Kelenken was a giant, flightless predatory bird with the largest known bird skull, about 71 centimeters long.

Source: Science — A giant terror bird from Patagonia; Museo Paleontológico Egidio Feruglio — Kelenken guillermoi

Prehistoric Life

NameSizeCompared with Kelenken guillermoi
Arthropleura armata2.6 m (8 ft 6 in)0.87×
Mammut americanum2.9 m (9 ft 6 in)0.97×
Hieraaetus moorei3 m (9 ft 10 in)same size
Mussaurus patagonicus3 m (9 ft 10 in)same size
Aepyornis maximus3 m (9 ft 10 in)same size
Kelenken guillermoi3 m (9 ft 10 in)this page
Macrauchenia patachonica3 m (9 ft 10 in)same size
Gigantopithecus blacki3 m (9 ft 10 in)same size
Glyptodon clavipes3.3 m (11 ft)1.1×
Arctodus simus3.4 m (11 ft)1.1×

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