Fossilised sperm discovered inside a mussel-like crustacean that was trapped in amber 100 million years ago may be the oldest ever found, scientists say. The female ostracod was unearthed by an international team of palaeontologists. They believe it mated shortly before becoming trapped in the resin. Their findings, published in Proceedings of the Royal Society B, provide "an extremely rare opportunity" to learn more about the evolution of the reproductive process, they added.
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