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传统的奥斯坦型(Orsten-type)化石是指三维磷酸盐化的、以软躯体保存为主的、微型蜕皮动物化石。它们代表着早寒武世到早奥陶世浅海小型底栖生物群中的蜕皮动物,是其它类型的保存方式(如布尔吉斯页岩型)难以保存的。奥斯坦型化石在西方有近半个世纪的研究历史,但是在中国却起步较晚,直到2005年才首次报道。中国的奥斯坦型化石在四个剖面的相关层位有产出,即湘西王村剖面上寒武统排碧阶、滇北硝滩剖面下寒武统第三阶、陕南张家沟剖面和川北新立剖面的下寒武统幸运阶。报道的化石类群包括丰富的甲壳动物Phosphatocopida,最古老的真甲壳动物,最古老的环神经动物,动吻动物门第一个化石属种,等等。虽然研究历史短,中国的奥斯坦型化石在揭示甲壳动物、环神经动物及蜕皮动物的起源和早期演化方面展现了重要的价值。
The traditional Orsten-type fossils are three-dimensional phosphated, mollusc-based, mini molting fossils. They represent molting from the Early Cambrian to the Early Ordovician shallow-water meiofauna and are difficult to preserve by other types of preservation methods (eg, Burghis shale type). Ostanite fossils in the West nearly half a century of history, but in China has started late, did not report for the first time in 2005. The Oostanite fossils in China have output at the relevant layers of the four profiles, namely the Upper Cambrian Paleolithic in the western Hunan Wangcun section, the Lower Cambrian third order in the North Tanbei section of the northern Yunnan, the Zhangjiagou section in the southern Shaanxi And the Lower Cambrian lucky order of the Xinli Section in North Sichuan. The reported fossil groups include the rich crustacean Phosphatocopida, the oldest true crustacean, the oldest circadian nerve, the first fossil of a kissing animal, and so on. Although the research history is short, the Chinese Ostanite fossils have demonstrated great value in revealing the origins and early evolution of crustaceans, ring neuroviruses and molting.