A 50-million-year-old fossil captures a swimming school of fish
This snapshot in time reveals that fish may have coordinated their motion long ago
![fish fossil](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2019/05/052819_cw_fossil-fish_feat.jpg?fit=860%2C460&ssl=1)
PREHISTORIC SCHOOL A shoal of extinct Erismatopterus levatus captured in a fossil that dates to the Eocene Epoch suggests that schooling behavior in fish may have evolved tens of millions of years ago.
N. Mizumoto, S. Miyata and S.C. Pratt/Proceedings of the Royal Society B 2019