The Agilisaurus is an ornithopod dinosaur from middle Jurassic Asia. They lived during the Late Jurassic Period which is present-day Eastern Asia, which was approximately 169 million years ago. Only one species of the Agilisaurus was discovered.

Key facts

Agilisaurus pronunciationThe name Agilisaurus is pronounced as “aj-i-li-sore-us”.
What does Agilisaurus mean?The name Agilisaurus was derived from the Latin “agilis” which means ‘agile’ and the Greek word, “sauros”, which means ‘lizard’. This name was given as this pertains to the agility of the dinosaur resulting from its light skeleton and long legs.
Dinosaur typeTheropod
On the menuHerbivore
Length1.2-2 meters (3.9-6.5 ft)
Height0.6 meters (1.9 ft)
Weight40 kg (88 lbs)
Life expectancyThere is not currently enough evidence about the Agilisaurus and the life expectancy of this dinosaur is currently unknown.
Legs used to get aroundThe Agilisaurus was bipedal.
Estimated top speedThere is currently no information available about the speed of the Agilisaurus, but due to the fossils of its hind legs, this dinosaur could run well.
When they livedThe Agilisaurus lived during the Late Jurassic Period, which was 169-159 million years ago.
Where they have been found?Szechuan

When & Where

The Agilisaurus was first discovered in the Zigong Dinosaur Museum located in Szechuan in 1915, and now the fossils of the dinosaur are preserved in this same museum. This name was provided by Peng Guangzhou, a Paleontologist.

Size & Weight

The size and weight of the Agilisaurus was relatively small, only reaching up to about 1.2-2 meters (3.9-6.5 ft) in length, 0.6 meters (1.9 ft) in height, and  40 kg (88 lbs) in weight. 

Mobility & Diet

As one of the herbivore dinosaurs during their time, the Agilisaurus ate a combination of leaves, twigs, and seeds. Their mouth and jaws have a break-like structure, which helps them digest the food easier. Also, the Agilisaurus was diurnal, which meant that it was active during the day and rested during the night. 

Interesting Points

  • There was only one specimen that was discovered by paleontologists.
  • Just like other dinosaurs, they reproduced by laying eggs.
  • Existed from 163.5 million years ago to 157.3 million years ago.
  • Their diet mainly consists of plants.
  • Thrived in a terrestrial environment.
  • Upon discovery, it was found that the Agilisaurus can reach up to 100 pounds, which was larger compared to the usual weight of the dinosaur which is 75 pounds.