Paleontology: The oldest known sperm cells

Source: Science Daily

An international team of paleontologists has discovered giant sperm cells in a 100-million year-old female ostracod preserved in a sample of amber. Clearly, the tiny crustacean had mated shortly before being entombed in a drop of tree resin.

https://www.sciencedaily.com/releases/2020/09/200916090532.htm