Intertwined filaments, as seen in the photo, help corroborate the conclusion that these are not marks left by animals (IMAGE)

Fundação de Amparo à Pesquisa do Estado de São Paulo

Intertwined filaments, as seen in the photo, help corroborate the conclusion that these are not marks left by animals

Caption

Visible to the naked eye, fossilized bacteria or algae were found in an ancient seabed that emerged in the current Brazilian state of Mato Grosso do Sul

Credit

Bruno Becker-Kerber/Harvard University

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