“The Wrongly Named Egg Thief”
Binomial Oviraptor philoceratops · OH-vih-RAP-tor
Late Cretaceous · 75-71 Ma
IllustrationOviraptor fossil records in Fossil Atlas are mapped as selected modern discovery locations, with 2 source-backed records currently shown. Known from Late Cretaceous Mongolia, especially Djadokhta Formation and Flaming Cliffs-region fossil context. Key mapped formations in the current dataset include Djadokhta, Dabrazhin. These pins are fossil record locations, not a complete ancient habitat map.
Oviraptor was a small beaked theropod from Late Cretaceous Mongolia. Its name reflects an early egg-stealing interpretation that is now treated with more caution because related fossils show brooding behavior. Fossil Atlas uses Oviraptor to strengthen the Flaming Cliffs and Djadokhta Formation educational cluster.
Drawn true to scale on a metre ruler.
Length
measured2 m · 6.6 ft
Largest known specimens
Height
measured1.0 m · 3.3 ft
Body mass
estimate35 kg · 77 lb
Typical adult
Top speed
estimate40 km/h · 25 mph
Modelled, debated
Brain : body (EQ)
estimate2.5
Encephalization quotient
Oviraptor was named in 1924 after its skull was found near a nest of eggs that the discoverers assumed it had been stealing. Decades later, a related oviraptorosaur was found sitting on a nest in the brooding posture of modern birds, and the eggs near the original Oviraptor were re-examined and found to belong to Oviraptor itself. The name means egg thief and cannot be changed under naming rules, even though the original accusation was wrong.
The beak
A toothless beak and powerful jaw muscles, probably capable of crushing hard food. What Oviraptor actually ate, whether mollusks, eggs, seeds, or other material, is not confirmed.
Brooding
Related oviraptorosaurs found sitting on nests in a posture identical to brooding modern birds established that this behavior existed in the group. The same behavior almost certainly applied to Oviraptor.
The crest
A bony crest on the skull that varied between individuals, probably used for display or species recognition.
Build
Lightly built with long legs and arms, feathered based on related specimens, and faster-moving than the larger herbivores sharing its habitat.
Position of this animal’s known range across 252 million years of the Mesozoic and beyond.
75-71 million years ago
Oviraptor means egg thief, but the old interpretation is now treated cautiously.
Related oviraptorosaurs have been found brooding nests.
Its beak and crest make a strong visual identity for cards.
Oviraptor adds egg and nesting questions to the Flaming Cliffs cluster.
Henry Fairfield Osborn found a skull near a nest at the Flaming Cliffs in 1923 and named the animal egg thief the following year, assuming it had been raiding Protoceratops eggs. That interpretation held for decades. In 1993, a related oviraptorosaur was found in Inner Mongolia sitting on a nest, and in 1995 an Oviraptor was found in the same position. Embryos inside the eggs turned out to belong to an oviraptorosaur rather than Protoceratops. The name is permanent regardless.
Animals known from the same deposits and time as Oviraptor.
Velociraptor
A small predator sharing the same Djadokhta Formation deposits.
Protoceratops
The most abundant herbivore in the same environment, initially and incorrectly connected to Oviraptor through the egg-theft interpretation.
Pinacosaurus
An ankylosaur from the same desert formation.
Other members of Oviraptoridae.
Citipati
A well-known Mongolian oviraptorosaur found in the brooding posture that helped correct the egg-thief interpretation of Oviraptor.
Therizinosaurus
A distant maniraptorian relative, useful for showing how differently the theropod body plan could develop within the same broader group.
Gallimimus
Another toothless Mongolian theropod from slightly later deposits, convergently similar in the loss of teeth.
Pins show selected fossil records for Oviraptor; use them as modern discovery evidence, not a complete range map. Modern fossil discovery map: pins show where selected fossil and specimen records were found today, not ancient Earth positions. What does this mean?
Specimen evidence
These are sourced specimen assets, separate from reconstruction artwork. Only media with clear open or reusable rights is displayed by default.
Oviraptor is represented here by selected fossil records from known from late cretaceous mongolia, especially djadokhta formation and flaming cliffs-region fossil context. Fossil Atlas maps those records as modern discovery locations.
No. The map shows modern fossil discovery locations from selected records. Ancient habitat and paleogeographic reconstructions are separate questions.
The current Fossil Atlas records include Djadokhta. Formation coverage depends on the selected dataset and may not be complete.
Yes. Use the expedition card generator to turn the Oviraptor map and specimen profile into a shareable card.
Selected fossil records from PBDB and museum biodiversity aggregators. This is not a complete fossil count by country; source labels and confidence notes help distinguish canonical paleobiology records from specimen-media records.
Reconstruction images are labeled illustrations and do not represent fossil evidence. Size, speed, and bite-force figures are typical published estimates and remain subject to revision as new specimens are described.
Maps use curated PBDB, museum, and specimen-source records with visible caveats.
Pins show where fossils were found or reported today, not exact ancient habitat positions.
Artwork is labeled separately from specimen photos, maps, and source records.
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