The late Precambrian greening of the Earth

By L. Knauth, M. Kennedy. Nature, 2009

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Early life on land and the first terrestrial ecosystems (2013, background): “2006) and abrupt changes in the global balance of the C cycle in the Neoproterozoic (Knauth and Kennedy 2009).”
The terrestrial biota prior to the origin of land plants (embryophytes): a review of the evidence (2015, methodology): “Both global (Horodyski and Knauth 1994; Knauth and Kennedy 2009; Kump 2014) and more local (Horodyskyj et al. 2012) geochemical trends in weathering and the production of clays have also been used as a proxy for the existence of a landbased microflora.”
Proterozoic phytoplankton and timing of Chlorophyte algae origins (2011, background): “Terrestrial expansion of biota at c. 850 Ma is according to Knauth and Kennedy (2009).”
The Laurentian record of Neoproterozoic glaciation, tectonism, and eukaryotic evolution in Death Valley, California (2013, methodology): “Previous workers have used the apparent covariance in the δ13C and δ18O composition of carbonate rocks in Death Valley to argue that these values have been severely modifi ed by meteoric alteration (e.g., Kenny and Knauth, 2001; Knauth and Kennedy, 2009).”