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- Yun, HaoState Key Laboratory of Continental Dynamics and Shaanxi Key Laboratory of Early Life and Environments, Department of Geology, Northwest University, Xi’an (author)
Pyritized preservation of chancelloriids from the Cambrian Stage 3 ofSouth China and implications for biomineralization
- Article/chapterEnglish2021
Publisher, publication year, extent ...
- Amsterdam :Elsevier BV,2021
- electronicrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:nrm-4608
- https://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-4608URI
- https://doi.org/10.1016/j.geobios.2021.06.001DOI
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- Language:English
- Summary in:English
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Notes
- This study was supported by National Key Research and Development Program (grant number 2017YFC0603101), National Natural Science Foundation of China (grant numbers 41621003, 41890840, 41930319, and 42002011), the Strategic Priority Research Program of Chinese Academy of Sciences (grant number XDB26000000), the 111 Project (grant number D17013), and China Postdoctoral Science Foundation (grant number 2019M663793).
- The enigmatic Cambrian animal chancelloriids were discovered in a wide range of taphonomic settings; however, preservation of biomineralized sclerite microstructure was solely known from secondarily phosphatized skeletal remains. Here, we investigate a uniquely pyritized chancelloriid from the lowerCambrian Guojiaba Formation in southern Shaanxi Province, China, using a combination of advanced analytic techniques. Results of the energy dispersive spectroscopy (EDS), X-Ray Fluorescence (XRF), and Raman spectrum show that the sclerites and scleritomes are preserved as pyritized internal moulds witha calcitic outer layer. The outer layer enveloping the internal moulds likely represents the recrystallized counterpart of the original biomineralized sclerite wall. Distinctive fibrous microstructures are discovered in the sclerites, which echo the features seen in the phosphatized fossils of chancelloriids. The typical microstructure, along with the recrystallized calcite, corroborate the interpretation that chancelloriid sclerites were originally constructed by fibrous aragonite. The stability of the microstructure and mineral composition in both carbonate and siliciclastic backgrounds indicate that chancelloriids were adapted to exploit aragonitic fibres to build their skeletons regardless of the change of their living environments.
Subject headings and genre
- NATURVETENSKAP Geovetenskap och miljövetenskap Annan geovetenskap och miljövetenskap hsv//swe
- NATURAL SCIENCES Earth and Related Environmental Sciences Other Earth and Related Environmental Sciences hsv//eng
- Chancelloriida
- Scleritome
- Fossilization
- Fibrous aragonite
- Guojiaba Formation
- Ecosystems and species history
- Ekosystem och arthistoria
- The changing Earth
- Den föränderliga jorden
Added entries (persons, corporate bodies, meetings, titles ...)
- Cui, LinhaoState Key Laboratory of Continental Dynamics and Shaanxi Key Laboratory of Early Life and Environments, Department of Geology, Northwest University, Xi’an (author)
- Li, LuoyangNaturhistoriska riksmuseet,Enheten för paleobiologi(Swepub:nrm)luoyanli (author)
- Liu, WeiState Key Laboratory of Continental Dynamics and Shaanxi Key Laboratory of Early Life and Environments, Department of Geology, Northwest University, Xi’an (author)
- Zhang, XingliangState Key Laboratory of Continental Dynamics and Shaanxi Key Laboratory of Early Life and Environments, Department of Geology, Northwest University, Xi’an (author)
- State Key Laboratory of Continental Dynamics and Shaanxi Key Laboratory of Early Life and Environments, Department of Geology, Northwest University, Xi’anEnheten för paleobiologi (creator_code:org_t)
Related titles
- In:GeobiosAmsterdam : Elsevier BV69, s. 77-860016-69951777-5728
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