ScienceShot: How Arthropods Got Their Armor
Wednesday, February 23, 2011 - 13:30
in Paleontology & Archaeology
520-million-year-old "walking cactus" provides clues to the evolution of crabs, spiders, and their relatives
520-million-year-old "walking cactus" provides clues to the evolution of crabs, spiders, and their relatives