Summary: The uppermost Katian (Rawtheyan) Slade and Redhill Mudstone Formation, in the Llanddowror area of Carmarthenshire in South West Wales, contains an horizon yielding abundant, articulated crinoids, cystoids, mitrate ‘carpoids’, asteroids and ophiuroids. This echinoderm Lagerstatte also includes a rich trilobite fauna dominated by illaenids and is thus unlike any of the other trilobite faunas in the formation, as is the occurrence of several enrolled or partially enrolled specimens. The trilobites and echinoderms provide the same taphonomic signal – the rapid transport and burial of organisms, leading to their death. Transport occurred within sand‐grade sediment without causing disarticulation of skeletons of the animals that were alive immediately prior to the event.

中文翻译：

---

来自威尔士西南部最上层的 Katian 棘皮动物 Lagerstätte 的三叶虫动物群的埋藏学

摘要：位于威尔士西南部卡马森郡 Llanddowror 地区的最上层 Katian (Rawtheyan) Slade 和 Redhill Mudstone 地层包含一个地层，产生丰富的铰接式海百合、囊状、mitrate 'carpoids'、小行星和 ophiuroid。这种棘皮动物 Lagerstatte 还包括一个丰富的三叶虫动物群，以 illaenids 为主，因此不同于地层中的任何其他三叶虫动物群，几个登记或部分登记的标本的出现也是如此。三叶虫和棘皮动物提供相同的埋藏信号——生物体的快速运输和掩埋，导致它们死亡。运输发生在沙级沉积物中，而不会导致事件发生前立即活着的动物骨骼脱节。