Hypostome

In zoology, the hypostome can refer to structures in distinct animal groups:

  • Hypostome (trilobite), the ventral mouthpart plate in trilobites
  • Hypostome (tick), the barbed attachment structure associated with the mouthparts of parasitic arachnids
  • Hypostome (cnidarian), the oral tip surrounded by tentacles in hydrozoan cnidarians
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