The culprit is an Ornitholestes, a 2 meter long carnivore that is closely related to the dinosaurs that will evolve into birds. Normally he hunts small lizards and mammals in the forest. The hatchling is an extra treat.

– Narrator
Walking with Dinosaurs:Time of the Titans

Ornitholestes is a genus of theropod dinosaur which lived during the late Jurassic period in what is now North America (150-139 MYA).


Ornitholestes was a relatively small dinosaur, measuring 2.5 meters in length and weighing around 15 kg. This dinosaur lived in the same place and the same time as many of the giant Jurassic dinosaurs like Apatosaurus, Stegosaurus and Allosaurus. However, Ornitholestes most likely stayed away from these animals and focused on hunting small animals and baby dinosaurs, as seen in Time of the Titans.

When Ornitholestes was discovered, scientists believed that it had a nasal crest but that theory is now disproven. However, now scientists believe that Ornitholestes had at least some sort of feathers, maybe even true feathers if it was indeed a real maniraptoran.


Portrayal in the SeriesEdit

It was portrayed as an egg thief/antagonist that preyed on baby Diplodocus and Allosaurus.

In Walking with... SeriesEdit

Walking with DinosaursEdit

Time of the TitansEdit

An Ornitholestes was seen eating an hatched Diplodocus sauropodlet, whilst the remaining babies emerged from the soil, the carnivore watched as it already ate its fill. Later, the same Ornitholestes passed by the Diplodocus creche which was hiding in the undergrowth.

Years later, an Ornitholestes was seen screeching at the Diplodocus creche which were too large for the Ornitholestes to hunt.

The Ballad of Big AlEdit

A pair of Ornitholestes were seen stalking a group of baby Allosaurus. Another was later seen protecting its nest from Big Al.


  • Ornitholestes is shown to have a nasal crest. That theory is discussed. The problem is that the only fossil we have as his nasal bone broken.
  • Ornitholestes did not have pronated hands, in fact, none of the theropods had them. The pronated hands was a common error before people realized that theropods (including feathered dinosaurs) didn't have them. Even so, this mistake persists to this day.

Appearances In Other MediaEdit

Primeval: New WorldEdit

Read more at the Anomaly Research Centre

Ornitholestes appears in the episodes Babes in the Woods and The Inquisition with an appearance similar to its' WWD depiction.

The Lost World (Jurassic Park)Edit

Read more at the Jurassic Park Wiki

A carcass of an individual is discovered Martin Guitierrez in the novel. It was said to have skin like Carnotaurus, which was depicted with chameleon-like abilities.

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