

The assemblage, unveiled today in the journal Scientific Reports, is among many astounding new fossils of Mussaurus patagonicus, a distant ancestral cousin of the famous long-necked dinosaurs such as Brachiosaurus or Brontosaurus. What’s more certain is their age: It’s likely that none of these dinosaurs made it to their second birthday. Or perhaps they died in the vicious dust storm that buried their carcasses in piles of silt. Perhaps they succumbed to drought, as the spring or summer sun baked the ephemeral lakeshore on which they had gathered. Journal Media does not control and is not responsible for the content of external websites.Some 193 million years ago in what is now Argentina, a group of 11 dinosaurs all died within a few feet of each other.

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