Strange PhenomenaMysterious magnetic fossils powered ancient animal navigation Posted on December 18, 2025 by Administrator Buried in ancient seafloor sediments dating back millions of years lie minuscule magnetic fossils—fragments left behind by a mysterious, unidentified organism. Shaped like spearheads, spindles, bullets and needles, and no larger than a bacterial cell, scientists are confident these magnetofossils are biological in origin, but they don’t know what creature made them, or why.