USASF_120428_122
Existing comment: Was this Dinosaur an Egg Thief?
When the first oviraptorid dinosaur was discovered in the 1920s on a nest of eggs like these, scientists assumed that the eggs belonged to Protoceratops, another dinosaur commonly found in the area. Paleontologists also thought that the oviraptorid was stealing the eggs for food.

Examine the Evidence:
Many years later, scientists discovered an egg with an embryon inside.
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