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

Racekiela ryderi

Gemmoscleres
  • Two distinctly different shapes and sizes
  • Smaller- few spines on shafts, flattened ends with large number of small teeth
  • Larger – large curved spines on shafts and curved claw-like hooks on ends.

Megascleres
  • Needle-like
  • Spines entire length

Microscleres – absent
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