Diversity of organic-walled microfossils from the early Mesoproterozoic Ruyang Group, North China Craton – A window into the early eukaryote evolution

摘要

Graphical abstract Display Omitted Highlights ? The Ruyang assemblage comprises 26 organic-walled microfossil taxa of 16 genera. ? Microfossils exhibit disparity of body plans, some appearing earlier than previously documented. ? Large size and diverse forms of vesicle ornamentation indicate eukaryotic affinity. ? Within-assemblage diversity in the Ruyang Group is high by pre-Ediacaran standards. ?