This research explores the significance of rapid burial in preserving fossils, with a particular focus on free‐living echinoderms. Experiments were based on ophiuroids to simulate burial under different turbiditic flows. The results showed that a bed thickness of around 10 cm is a limit for the preservation of whole skeletons in most cases. The type of sediment can affect the integrity of the buried skeletons, with sand deposition resulting in higher rates of autotomy. However, mud deposition did not show any numbing effect, as previously believed for echinoderms. In contrast, freshwater‐rich sediments can play a critical role, paralysing specimens and preventing escape postures through rapid changes in salinity. From this, the study highlights the importance of extrabasinal turbidites, generated outside the marine basin, in the fossilization of marine invertebrates. Such sediments are rich in fresh water and can be more efficient burial traps compared to other intrabasinal deposits generated by storm waves or submarine landslides.

中文翻译：

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快速埋葬如何进行？棘皮动物实验的新见解

这项研究探讨了快速埋葬对于保存化石的重要性，特别关注自由生活的棘皮动物。实验以蛇尾类为基础，模拟不同浊流下的埋藏。结果表明，在大多数情况下，10厘米左右的床层厚度是保存整个骨骼的极限。沉积物的类型会影响埋藏骨骼的完整性，沙子沉积会导致更高的自残率。然而，泥浆沉积并没有像以前认为的棘皮动物那样表现出任何麻木效果。相比之下，富含淡水的沉积物可以发挥关键作用，通过盐度的快速变化使标本瘫痪并防止其逃逸姿势。由此，该研究强调了在海洋盆地之外产生的盆外浊积岩在海洋无脊椎动物化石化中的重要性。与风暴波或海底滑坡产生的其他盆内沉积物相比，此类沉积物富含淡水，可以成为更有效的掩埋陷阱。