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Dinosaur nesting site pushes back knowledge by 100 million years

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From “Oldest dinosaur nest site found” (BBC News, 24 January 2012), we learn,

A nesting site for dinosaur eggs found in South Africa is 100 million years older than the previous oldest site.

Palaeontologists found 10 separate nests, each containing clutches of up to 34 eggs measuring 6-7cm.

“Even though the fossil record of dinosaurs is extensive, we actually have very little fossil information about their reproductive biology, particularly for early dinosaurs,” said David Evans, associate curator of vertebrate palaeontology at the Royal Ontario Museum.

Most likely, they didn’t do things much differently than later models of dinosaur, because there aren’t many different ways to do them. But great finds should emerge from this and other promising sites in the area.

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Would this be an example of an evolutionary nested hierarchy? :) Joe

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