A fossilized spider that glows under ultraviolet light has given away the secret of its exceptional 23-million-year-long existence.
When researchers placed the fossil and others like it under a fluorescent microscope on a whim, they were surprised to notice the subtle outline of the arachnids suddenly pop against their background.
"[T]here were just thousands and thousands and thousands of microalgae all around the fossils and coating the fossils themselves,"For centuries, scientists have been studying the insect and fish fossils found in this region of France, but only now are we beginning to understand how these fragile creatures were preserved for all that time.
This could trigger a chemical process known as sulfurization, which takes carbon units from the spider's exoskeleton and cross-links it with sulfur from the algae mats. The result ultimately stabilizes carbon and keeps it from degrading as quickly.Olcott.
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