Oviraptor

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Oviraptor (Oh-vee-rap-tor), Egg Thief lived in the Late Cretaceous of North America. Originally it was categorized as a stealer of eggs, but new evidence indicates that the original specimen was not stealing Protoceratops' eggs but incubating its own (the embryo in the egg is an Oviraptor).


Content List

1. Genera & species

2. Characteristics

a. Size

b. Behavior

3. History of Discovery

4. Paleoenvironment

5. References


Genera and Species

Classification: Theropoda, Tetanura, Coelurosauria, Oviraptoridae

Species: O. philoceratops

Senior synonyms: Fenestrosaurus philoceratops


Characteristics

Oviraptor's lower jaw curved up and was shaped to help exert strong crushing force. The mouth was toothless except for a pair of tooth on the palate. It had clawed, grasping hands, with the largest claw on the 3rd finger. Its feet had 4 toes, the first tiny and useless, and the rest clawed. It had large eyes and head crest.


Size

LENGTH: 1.8 - 2.4 m (6 - 8 ft).

WEIGHT: 58 kg (128 lb).


Behavior

It has been found in a characteristic hatching posture on a nest with several clutches of eggs. Eggs were about the size of a hotdog bun. This was important evidence for establishing that dinosaurs were warm blooded. Oviraptors are close to the descent of birds and are portrayed with feathers base on the relationship.


History of Discovery

Discovered by Osborn, 1924 and known from 15 almost complete eggs and fragments.


Paleoenvironment

Found in Mongolia dunes and Oasis.


References

1. Paul, G. (2010). The Princeton Field Guide to Dinosaurs (pp. 3719). Princeton, New Jersey: University Press Princeton.

2. Worth, G. (1999). The Dinosaur Encyclopaedia (pp. 1667). Scarborough, Western Australia: HyperWorks Reference Software.

3. Griffin. (2010, July 9). Oviraptor. .