Across
- 3. Long stem connecting the holdfast to the calyx in a crinoid.
- 5. ________ echinoids include the sand dollars and the sea biscuits.
- 9. Ring of appendages on a crinoid.
- 10. Developmental pathway by which the coelom grows in Echinoderms.
- 16. Clade that includes “feather stars” with and without stalks.
- 18. Kind of symmetry found in adult echinoderms.
- 19. Rock made entirely out of crinoid bits. Looks like Cherios!
- 20. Term for the biomineralized husk of an urchin. (Because “shell” isn’t quite right!)
- 21. Baby echinoderms.
Down
- 1. Urchin tests are made of high-________ calcite.
- 2. The mother-pore that maintains pressure within the water vascular system.
- 4. Life mode of baby echinoderms.
- 6. Clade that includes sea urchins, sea biscuits, and sand dollars.
- 7. A carbonate mineral with equal parts Ca and Mg.
- 8. How a stalked crinoid connects to the sediment-water-interface.
- 11. Stars and urchins move about using their ______ feet.
- 12. Clade that includes sea urchins and sea stars
- 13. Poky bits of an urchin.
- 14. Kind of symmetry found in larval echinoderms.
- 15. “Head” of a crinoid.
- 17. Appendages on a crinoid, or a sea star.