Calcite orientations and composition ranges within teeth across Echinoidea.

@article{Stock2014CalciteOA,
  title={Calcite orientations and composition ranges within teeth across Echinoidea.},
  author={S. R. Stock and Konstantin Ignatiev and P. L. Lee and Jonathan D. Almer},
  journal={Connective tissue research},
  year={2014},
  volume={55 Suppl 1},
  pages={48-52}
}
Sea urchin's teeth from four families of order Echinoida and from orders Temnopleuroida, Arbacioida and Cidaroida were studied with synchrotron X-ray diffraction. The high and very high Mg calcite phases of the teeth, i.e. the first and second stage mineral constituents, respectively, have the same crystallographic orientations. The co-orientation of first and second stage mineral, which the authors attribute to epitaxy, extends across the phylogenic width of the extant regular sea urchins and… CONTINUE READING

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