Allosaurus was a carnivore. It lived in the Jurassic period and inhabited Africa, Europe and North America. Its fossils have been found in places such as Utah, North Rhine-Westphalia (Germany) and Nebraska.

Perhaps the second most famous carnosaur after Tyrannosaurus Rex, the Allosaurus was a powerful carnivorous theropod that lived during the late Jurassic period.

Allosaurus was known for many years under the name Antrodemus, because it was first categorized by O.C. Marsh under that name. However, as with many discoveries from this competitive period of paleontology, there were profound issues with the verifiability of the discovery. In the latter half of the 20th century, it became preferable to refer to Allosaurus rather than Antrodemus, because that was the name assigned to the first well-documented discoveries.

Allosaurus is frequently depicted in art as having longer forelimbs than the Tyrannosaurus Rex, with three fingers instead of two. It is also known to be somewhat smaller, with the largest specimen reaching 32 feet in length.

Quick facts about Allosaurus:

  • Existed from 163.5 million years ago to Coniacian Age
  • Lived in a terrestrial habitat
  • Was a carnivore
  • Reproduced by laying eggs
  • Had a body mass of approximately 2090 kg
  • 117 different specimens have been found by paleontologists

All the Allosaurus illustrations below were collected from the internet. Enjoy and explore: