Glowing spider fossils may exist thanks to tiny algae’s goo


APRIL 22, 2022

The secret ingredient for fossil preservation at a famous French site wouldn’t be found in a Julia Child cookbook. It was a sticky goo made by microalgae, researchers suggest.

An analysis of roughly 22-million-year-old spider fossils from a fossil-rich rock formation in Aix-en-Provence, France, reveals that the arachnids’ bodies were coated with a tarry black substance. That substance, a kind of biopolymer, was probably secreted by tiny algae called diatoms that lived in the lake or lagoon waters at the ancient site, scientists report April 21 in Communications Earth & Environment.

https://www.sciencenews.org/article/...atom-algae-goo