The hurdiid radiodont Cambroraster is characterized by a prominent horseshoe-shaped head carapace, which bears conspicuous posterolateral spinous processes and covers half of the body length, and a pair of frontal appendages possessing rake-like endites. Here we report the discovery of characteristic central and lateral elements as well as a possible appendage endite for Cambroraster from the Cambrian Wuliuan Mantou Formation of North China. This discovery suggests that Cambroraster had dispersed over a wide biogeographic range and expands the geographic range of Hurdiidae. The increasing discoveries of exceptionally preserved fossils in the Upper Shale Member of the Mantou Formation indicate that this horizon is a promising Burgess Shale–type Lagerstätte.

中文翻译：

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华北中寒武统（五连）馒头组中寒武纪寒武纪的赋存

hudiid radiodont摄影机其特征是突出的马蹄形头甲，后外侧有明显的棘突，覆盖体长的一半，前附有一对具有耙状尾端的前肢。在这里，我们报告了特征中央和横向元素的发现以及可能的附属物摄影机来自华北寒武纪五六安馒头组。这一发现表明摄影机已经分散在广泛的生物地理范围内并扩大了Hurdiidae的地理范围。在 Mantou 组的上页岩段发现保存异常完好的化石表明该层位是一个很有前景的 Burgess 页岩型 Lagerstätte。