Corentin Loron,^1,2,* Małgorzata Moczydłowska<sup>1,**

1</sup>aUppsala University, Department of Earth Sciences, Palaeobiology, Villavägen 16, SE 752 36 Uppsala,
²bCurrently at University of Liège, Department of Geology, 4000 Liège, Belgium

^*Corentin Loron is currently a PhD student at the University of Liège, Belgium. He graduated with a Bachelor degree in organisms biology from the University of Lille 1, France. He obtained in 2016 a dual MSc degree from the University of Lille 1 and Uppsala University, Sweden, where he worked with the Professor M. Moczydłowska-Vidal for his thesis. Since September 2016, he started a PhD project at the University of Liège with Professor E. J. Javaux, on Proterozoic evolution of Eukaryotes in Arctic Canada. His research interests are for Meso- and Neoproterozoic organic-walled microfossils, the evolution of their diversity and taxonomy.
^**Małgorzata Moczydłowska-Vidal is a professor of micropalaeontology at Uppsala University, Department of Earth Sciences, Palaeobiology Program. She graduated with MSc degree in palaeontology at Warsaw University and studied as senior research fellow at UCLA, Center for the Study of the Evolution and the Origin of Life (1986–1987), under the leadership of Prof. J. William Schopf. Malgorzata completed a PhD in historical geology and palaeontology at Lund University in 1989, and undertook a postdoctoral fellowship at Harvard University with Prof. Andrew H. Knoll. Since 1991, the scientific work has been affiliated with Uppsala University, sharing the research with teaching and supervising. Her research interests are focused on Proterozoic and early Palaeozoic organicwalled microbiota (acritarchs, green microalgae and cyanobacteria) and their biological affinities, evolution of photosynthetic microbiota, and biochronology.