Three-dimensional preservation of cellular and subcellular structures suggests 1.6 billion-year-old crown-group red algae
Fig 7
Relationships between filament width and cell volume in Rafatazmia, Denaricion, and some modern filamentous organisms.
Data sources for the modern taxa: Oscillatoriacea [62–64] and Soft-Bodied Stream Algae of California (http://dbmuseblade.colorado.edu/DiatomTwo/sbsac_site/). Beggiatoa [65–70]. Spirogyra (Soft-Bodied Stream Algae of California). Individual measurements are in Supporting Information in the file S1 Data.