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Quantitative electron spectroscopy of 125 I over an extended energy range

Alotiby, Mohmmed; Greguric, Ivan; Kibedi, Tibor; Tee, Bryan Pi Ern; Vos, Maarten


The dawn of animals remains one of the most mysterious milestones in the evolution of life. The fossil lipids 24-isopropylcholestane and 26-methylstigmastane are considered diagnostic for demosponges—arguably the oldest group of living animals. The widespread occurrence and high relative abundance of these biomarkers in Ediacaran sediments from 635–541 million years (Myr) ago have been viewed as evidence for the rise of animals to ecological importance approximately 100 Myr before their rapid...[Show more]

CollectionsANU Research Publications
Date published: 2019-02-15
Type: Journal article
Source: Journal of Electron Spectroscopy and Related Phenomena
DOI: 10.1016/j.elspec.2019.02.009
Access Rights: Open Access after embargo


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