Millipede and centipede ancestors evolved their legs while still underwater https://phys.org/news/2026-05-ancient-sea-fossils-millipede-centipede.html A marine stem-myriapod from the #Silurian Waukesha Lagerstätte, Wisconsin: terrestrial traits pre-date the transition to land https://royalsocietypublishing.org/rspb/article/293/2070/20260131/481605/A-marine-stem-myriapod-from-the-Silurian-Waukesha "a long-lost ancestor of #myriapods already had many unbranched legs while still living underwater. The finding contradicts the idea that this particular type of limb was an adaptation for land."