How Did An Oviraptor Defend Itself

What was the | A biggest egg?

| A Not surprisingly the biggest dinosaurs—the plant-eating sauropods— laid some of the biggest eggs, although these were surprisingly small. A sauropod egg weighed about 11 lb (5 kg) and was about 12 in (30 cm) long. This is only about twice the size of an ostrich egg, and tiny compared to the size of the mother.

Sauropod eggs

Sauropod eggs

Ovirapor Baby EggOstrich Protecting Eggs

How fast did babies grow?

| A After hatching, dinosaur babies, like these Troodons, grew quickly—most had to learn to defend themselves fast if they were to survive. Fossil evidence of hadrosaur young shows that they doubled in size in about six weeks. A one-year-old Maiasaura was about 10 ft (3 m) long. Depending on their type, dinosaurs were generally fully grown after about 14 years.

Did females sit on their nests?

This 80 million-year-old fossilized Oviraptor nest proved to be an amazing discovery. The mother Oviraptor had died with her arms spread over her eggs, as if protecting them. This suggests that Oviraptor, and probably other birdlike dinosaurs, were brooders—they sat on their nests to keep the eggs warm or cool

Did dinosaurs look after their young?

A Fossil evidence suggests that a female Maiasaura brought food to her babies after hatching, and may even have looked after her young for up to a year. There is no evidence that other dinosaurs cared for live young, but it is likely that many stayed near the nest to guard their eggs, like their closest living relatives, crocodiles.

How Dinosaurs Hatch

More Facts

■ Paleontologists think that some dinosaurs grew up in colonies, similar to those of modern nesting birds, such as gannets.

■ The sex of a dinosaur was determined by the temperature around the egg. If it was warm more males would hatch; a few degrees cooler and the babies would be mostly female.

■ Dinosaurs could be born as identical twins or even as triplets.

■ The largest known dinosaur egg is smaller than the egg of the extinct elephant bird of Madagascar.

Young Maiasaura with mother

Young Maiasaura with mother

Dinosaurs Protecting Their Babies

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    How did an oviraptor defend itself?
    7 years ago
  • idris
    How did the oviraptor protect itself?
    7 years ago
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    Did female dinosaurs protect their eggs in the nest?
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