For more than 170 years, paleontologists have been trying to solve the mystery of what created the strangely uniform hexagonal tunnels found in fossils. In a new study published in Earth Science Reviews, a team of researchers pored over the evidence and concluded that the most likely culprit was...
Source: [Phys.org](https://phys.org/news/2026-09-elusive-builders-hexagonal-tunnel-fossils.html)