Limulidae

• Tachypleinae
• Allolimulus
• Casterolimulus
• Crenatolimulus
• Keuperlimulus
• Victalimulus
• Yunnanolimulus
• Tri-spine horseshoe crab Tachypleus tridentatus

  A coastal animal of East and Southeast Asia with a hard shell and long tail. It lays eggs on sandy shores, and young animals grow on tidal flats.