Heteromeyenia baileyi

Gemmoscleres
  • Two class sizes
  • Shafts with conical spines
  • Ending in both ends with umbrella-like discs with incised teeth

Megascleres
  • Needle-like
  • Microspined at tips

Microscleres
  • Needle shaped with spines which increase in size toward center which can end in knobs