Data from: Chemical element distributions within conodont elements and their functional implications

Electron microprobe analyses of platform (pectiniform Pa) elements of
Permian conodonts reveal detailed and systematic chemical element
distributions. The crown of the conodont element is more densely
mineralized than the basal body and shows evidence of less dense
mineralization in areas of rapid growth. Patterns in sodium and sulfur
concentrations indicate oral to aboral differentiation within conodont
elements. These chemical element patterns support oral exposure during
life and functional use as a tooth, and they approximate the erupted and
embedded positions of the conodont tooth when the animal was alive.
Previously unrecognized spatial distributions of geochemically important
chemical elements warrant consideration in future geochemical studies of
conodonts.

对二叠纪牙形石（conodonts）的平台（梳状Pa）元素进行电子探针分析（Electron microprobe analyses），揭示了化学元素详细且系统的分布特征。牙形石元素的冠部矿化密度高于基体，快速生长区域则显示出矿化密度较低的迹象。钠和硫浓度的分布模式表明牙形石元素内部存在口部到反口部的分化。这些化学元素分布模式支持其在生命期间暴露于口腔并作为牙齿发挥功能，且近似于动物存活时牙形石牙齿的萌出与嵌入位置。此前未被识别的地球化学重要元素空间分布，值得在未来牙形石地球化学研究中予以关注。