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Selenium (Se) isotopes can yield substantial isotopic fractionation (up to 20‰) confirmed by experiments and field investigations, depending on various biotic or abiotic redox transformations. Therefore, it is expected that redox changes in the ancient oceans would induce significant isotopic fractionation, and the Se isotopic signatures recorded in old sedimentary rocks might provide new insight...
Orsten-type fossils, mainly arthropod juveniles and even tiny embryos exquisitely preserved in apatite, have been well documented from several localities in southern China. This particular type of Lagerstätte is known from just a few places around the world but has led to significant breakthroughs in the understanding of the early diversity of animals and evolution of metazoans. The original ‘orsten’...
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