Friday, February 17, 2012

One of the Old Dinosaur Nest Exposed

The dates rear 190 million years, according to study available in the Proceedings of the National Academy of Science (PNAS). According to PNAS, the discovery was ended within the fossil-rich Gate Highlands National Park, situated in Free State, Republic of South Africa, by paleontologist Robert Reisz, a lecturer of biology at the University of Toronto.

"The significance is the premature date of nesting behaviors," told by John Wahlert, chair and professor of biology at Baruch College. Researchers from the site maintain that these latest dinosaurs nests are more than 100 million years older than the earlier thought oldest dinosaur-nesting site. According to PNAS, at the occasion of the research magazine, Reisz had situated ten nests; each nest contains 34 eggs, along with "attractive evidence of complex reproductive behaviors."

Dinosaurs Nest

This recent discovery stands next to some of Reisz's other notable excavations, including the oldest known bipedal reptile, and the oldest known diapsid reptile. Evidence suggests that there are more eggs to be found in the area, according to Reisz, but they have just yet to be discovered and are covered by tons of rock.

These recently exposed nests contain clutches of eggs of the Massospondylus dinosaur. Many of these fossilized eggs hold embryos. "It is always attractive to have embryonic stages of dinosaur fossils," told Wahlert "They are delicate and very rare. It allows consideration of how dinosaurs grew." Beside with these egg grasp discoveries, facts are hinting at unknown reproductive behaviors that have also been exposed. According to the researchers, confirmation suggests that dinosaur nests were greatly organized; suggesting mothers may have agreed them carefully after she laid them. "I think it is incredible that we keep making such magnificent discoveries in South Africa.

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