The 'missing link' which proves the relationship between dinosaurs and birds may have been found.

It is a widely-held view that dinosaurs and birds share the same heritage, and an egg discovered in the Montsec area of Lleida, near Catalonia in Eastern Spain, shares characteristics of both species.

The dinosaur egg, dating back 70 to 83 million years, has an oval shape, similar in appearance to a chicken egg, and an 'air bag' inside which birds today use to breathe in the last stages of its development.

The new type of dinosaur egg has been given the scientific name of Sankofa pyrenaica and is the only dinosaur egg in the world to have an oval shape, similar to that of chicken eggs.

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Source / Pics