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Australia's Oldest Sperm Found in Fossil \ China Daily Xin Lian 2014-05-15 13:44:28 ?Comments(0) Mobile Client \ Key Point: Australia's Queensland has discovered the world's oldest and best-preserved sperm, hidden in a fossil dating back approximately 17 million years. \ Queensland, Australia, has discovered the world's oldest and best-preserved sperm, hidden in a fossil dating back approximately 17 million years. In the picture, the thick rope-like rod-shaped structure is the sperm within the ostracod. Comprehensive reports from foreign media indicate that Queensland, Australia, has discovered the world's oldest and best-preserved sperm, hidden in a fossil dating back approximately 17 million years. It is reported that this sperm was found inside the reproductive organ of a fossilized female ancient ostracod, and scientists said that this ostracod had just mated before it died. Compared to the size of this animal, the sperm appears to be very large. The fossil containing the sperm was excavated by three researchers several years ago. One of the researchers, Professor Michael Archer, stated that the sperm of 99.9% of microorganisms is very small relative to their body volume, and the fact that the soft tissue of this ostracod could be so well-preserved is extremely surprising to us. "When we pick up these hard, dry stones, we usually crack them with a hammer. We never expected to find sperm that once existed in soft tissue inside these stones," said Professor Archer. Professor Archer also pointed out that it is still unclear how the cells of this ostracod turned into fossils. However, fluids secreted by bats may have played an important role in preserving the sperm, and these bat fluids are found in large quantities on the floor of the cave where the fossil was discovered. This scientific achievement was published in the latest issue of the British journal 'Proceedings of the Royal Society B'.