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Earliest known dinosaur discovered in museum storage

When things like dinosaur bones come out of the ground, after they’re neatly packed and labeled, they often go into storage either at a museum or university to await study. And sometimes, they sit there in storage for a really long time before anyone knows exactly what was found. Case in point is a dinosaur skeleton 10-15 million years older than anything on record that had been chilling in London’s Natural History museum since the 1930s.

If it turns out that Nyasasaurus parringtoni is not a dinosaur, its identification will still be a pretty major event in paleontology, marking the discovery of the closest relative to the dinosaurs. Early research on the fossils suggests that it was more closely related to birds than crocodilians, but it’s too early too say for sure at this point that Nyasasaurus parringtoni is definitely the oldest dinosaur on record.

Not that there’s not plenty of good evidence suggesting just that, such as the rate at which the bones and blood vessels of the creature took shape. According to co-author Sarah Werning at UC Berkeley:

The bone tissue of Nyasasaurus is exactly what we would expect for an animal at this position on the dinosaur family tree. It’s a very good example of a transitional fossil; the bone tissue shows that Nyasasaurus grew about as fast as other primitive dinosaurs, but not as fast as later ones. Still, researchers are parsing their words carefully so as not to overstate. They do point out, however, that the find has implications whether Nyasasaurus is eventually recognized as a dinosaur or just a close relative, and lead author Sterling Nesbitt with the University of Washington:

It establishes that dinosaurs likely evolved earlier than previously expected and refutes the idea that dinosaur diversity burst onto the scene in the Late Triassic, a burst of diversification unseen in any other groups at that time. The name of the early dinosaur — or close cousin, if it breaks that way — pays homage to the researchers who discovered and initially studied the bones. The late Alex Charig — credited posthumously as an author on the study — studied and identified the bones, but never formally published his research on the creature he dubbed Nyasasaurus.


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