A tiny crustacean fossil contains roughly 100-million-year-old giant sperm
An ostracod encased in amber preserves what may be the oldest known fossilized sperm
![Ancient ostracod species mating](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/09/091520_CS_ancient-sperm_feat.jpg?fit=1028%2C579&ssl=1)
A fossil find dating to the Cretaceous Period reveals that when members of the ancient ostracod species Myanmarcypris hui mated, as illustrated here, males impregnated females with giant sperm.
Dinghua Yang