For decades, a set of eerily geometric fossils — hexagonal tunnels pressed into ancient sediment — resisted explanation, their makers hidden behind a convenient but unconvincing assumption that worms were responsible. Now, researchers have reattributed these honeycomb-like structures to small ancient crustaceans, distant ancestors of shrimp and crabs, whose body mechanics and burrowing behavior may have naturally produced such precise geometry. The finding reminds us that the fossil record is not merely a catalog of bones, but a behavioral archive — and that the architects of the past are ofte