A palaeoecological model for the late Mesoproterozoic – early Neoproterozoic Atar/El Mre?ti Group, Taoudeni Basin, Mauritania, northwestern Africa

摘要

Highlights ? Highly heterogenous palaeoredox depositional conditions. ? Anoxic and iron-rich dominant depositional conditions. ? Lower microfossil diversity but well preserved microbial mats during euxinic episodes. ? Higher eukaryotic diversity close to oxic and probably nutrient rich environments. Abstract Reconstructing the spatial distribution of early eukaryotes in palaeoenvironments through Proterozoic sedimentary basins provides important information about their palaeoecology and taphonomic condi