AI Article Synopsis
- X-ray diffraction and infrared absorption spectra reveal that the spicules of the tropical ascidian Herdmania momus are made of vaterite, marking the first known marine organisms to naturally form this mineral.
- The presence of vaterite in these ascidians may provide insights into evolutionary connections between urochordates and vertebrates.
- Additionally, the stability of vaterite in seawater for up to one year suggests it could be preserved in marine sediments over time.
Article Abstract
X-ray diffraction and infrared absorption spectra show that the spicules of the common tropical ascidian, Herdmania momus, are mineralized with vaterite. These are the first strictly marine organisms known to normally precipitate vaterite. The biomineralization of vaterite may constitute another link between the urochordates and vertebrates. The vaterite of ascidian spicules immersed in natural seawater remains mineralogically unchanged for 1 year, which indicates that vaterite may be preserved transiently in marine sediments.
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| http://dx.doi.org/10.1126/science.1118730 | DOI Listing |
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