New Research Suggests Arthropods, Not Worms, Built Ancient Hexagonal Tunnel Networks
A recent study led by Andrea Baucon, published in Earth-Science Reviews, proposes that arthropods, possibly crustaceans, were the architects of the 500-million-year-old hexagonal tunnel systems known as 'paleodictyon.' These intricate networks, first appearing in the early Cambrian period, have puzzled paleontologists for over 170 years due to their geometric precision and persistence across geological eras, with modern examples still forming on the seafloor. Previous theories often attributed these structures to worm-like creatures. The research team examined fossil specimens from Italy, Portugal, and Poland, spanning various geological periods. Utilizing high-resolution photography and 3D modeling, they meticulously measured the tunnels' widths, lengths, and angles. Their findings revealed consistent branching at approximately 120 degrees, characteristic of a perfect hexagon, with straight walls and sharp corners. This geometric consistency and the implied spatial awareness required for such construction...