(Phys.org)—A small team of researchers with members from institutions in Sweden, Argentina and Italy, has discovered fossilized sperm cells embedded in the walls of an ancient cocoon. In their paper published in the journal Biology Letters, the group describes how they came across the sperm fossils while studying a 50 million year old cocoon found on Seymour Island in Antarctica.Fonte: Phys.org - latest science and technology news stories
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