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Ancient Dinosaur Nursery Oldest Nesting Site Yet Found

An excavation at a site in South Africa has unearthed a 190-million-year-old dinosaur nesting site of the prosauropod dinosaur Massospondylus--revealing significant clues about the evolution of complex reproductive behavior in early dinosaurs.

The newly unearthed dinosaur nesting ground predates previously known nesting sites by 100 million years, according to study authors. The study describes clutches of eggs, many with embryos, as well as tiny dinosaur footprints, providing the oldest known evidence that the hatchlings remained at the nesting site long enough to at least double in size.

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