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In the shells of ancient mollusks found “messengers from space” 

A paleontologist from the University of South Florida, while researching fossilized mollusk remains, discovered an unusual object in their shells – dozens of tiny glass balls. The analysis showed that they contain a large amount of silica.
As a rule, such beads can occur as a result of tempo as a result of volcanic or industrial activity, experts specified.
Fossils were discovered in the Tamiami Formation in Florida about 10 years ago. Surprisingly, there are no volcanic sources near Tamiami. And from industrial activity these glass balls could not arise, since their age is between 5 million and 12 thousand years ago.
Unusual beads interested scientists, and they conducted a study. In total, the specialists managed to collect 83 glass beads inside the shells of the southern Kuah, which had lain for a long time in the warehouse, and only recently they were re-examined.
The beads were compared with samples of volcanic rock from neighboring regions, but they did not coincide in composition. Scientists are confident that the glass balls hit the shells of mollusks shortly before or after death, since the shell closes shortly after the death of the Kuah.
Then the researchers suggested that these balls – the remains of an ancient meteorite crashing into the Earth. It crumbled from overheating and left a lot of garbage in the atmosphere, which cooled and hardened in the form of tiny glass balls called microtectites before falling to the ground.

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