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Aboral surface with spines

Aboral surface with spines. spines. Central disk. Arm or ray. Madreporite. Ray or arm. Eye spot ( ocellus ) at tip of each ray. spine. madreporite. pedicellaria. Pedicellaria 1X. Spines on ray. Pedicellaria 3X. Spine. Pedicellaria40X. Pedicellaria100X. Pedicellaria 400X.

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Aboral surface with spines

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  1. Aboral surface with spines spines Central disk Arm or ray Madreporite Ray or arm Eye spot (ocellus) at tip of each ray

  2. spine madreporite pedicellaria

  3. Pedicellaria 1X Spines on ray

  4. Pedicellaria 3X Spine

  5. Pedicellaria40X

  6. Pedicellaria100X

  7. Pedicellaria400X

  8. Eye spot (ocellus)

  9. Tube feet in ambulacral groove Mouth Ambulacralossicles 3 1 1 2 1 1 3 1

  10. Tube feet in ambulacral groove Mouth Ambulacralossicles 3 2 1 3

  11. Ambulacralossicles Tube feet

  12. Tube feet 3X Ambulacralossicles 3X

  13. Tube feet 1X Oral view of ambulacral groove

  14. Pyloric ceca Ambulacral ridge 1 2

  15. Pyloric ceca

  16. Pyloric ceca

  17. Ambulacral ridge Ampullae Gonads

  18. Aboral surface removed showing Pyloric stomach 1X

  19. clam Ribs or spines Contents of stomach clam

  20. Contents of stomach crab clam stone

  21. crab clam stone Unknown glasslike sheet Ribs or spines Contents of stomach Plate of another echinoderm

  22. Ring Canal

  23. Stone canal 1X

  24. Stone canal

  25. Ambulacral ridge

  26. coelom Pyloric ceca Ambulacral ridge ampulla Ambulacral groove Tube foot sucker Ambulacralossicles

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