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Arthropoda (Ch. 29)

• Chelicerata (29-III)
  • Arachnida
    • Acari - Mites, Ticks
    • Amblypygi - Whip Spiders
    • Araneae - Spiders
    • Opiliones - Harvestmen
    • Palpigradi - Microwhip Scorpions
    • Pseudoscorpiones - False Scorpions
    • Ricinulei - Hooded Tickspiders
    • Scorpiones - Scorpions
    • Solifugae - Sun Spiders
    • Uropygi - Whip Scorpions
  • Pycnogonida - Sea Spiders
  • Merostomata - Horseshoe Crabs
• Mandibulata (29-IV)
  • Myriapoda
    • Chilopoda - Centipedes
    • Diplopoda - Millipedes
    • Pauropoda
    • Symphyla
  • Pancrustacea (29-V)
    • Crustacea
      • Branchiopoda - Fairy Shrimps, Tadpole Shrimps, Water Fleas
      • Cephalocarida - Horseshoe Shrimps
      • Ostracoda - Mussel Shrimps
      • Maxillopoda
        • Branchiura - Fish Lice
        • Copepoda - Copepods
        • Mystacocarida - Mustache Shrimps
        • Pentastomida - Tongue Worms
        • Thecostraca - Barnacles
      • Malacostraca
        • Phyllocarida
        • Eumalacostraca
          • Hoplocarida - Mantis Shrimps
          • Syncarida
          • Peracarida
            • Amphipoda - Beach Hoppers, Scuds, Well Shrimps
            • Isopoda - Pill Bugs (Roly Polies), Wood Lice
            • Mysidacea - Opossum Shrimps
          • Eucarida
            • Euphausiacea - Krill
            • Decapoda - Lobsters, Crayfishes, Crabs, Shrimps
    • Hexapoda (29-VI)
      • Collembola - Springtails
      • Protura - Coneheads
      • Diplura
      • Insecta (Ch. 30) >>> (Insects)