2,4 tot 2,1 miljard jaar geleden The rise of oxygen in Earth’s early ocean and atmosphere «Atmospheric oxygenation three billion years ago» 2,4 tot 2,1 miljard jaar geleden "Atmospheric oxygenation three billion years ago" The rise of oxygen in Earth’s early ocean and atmosphere "Atmospheric oxygenation three billion years ago" The rise of oxygen in Earth’s early ocean and atmosphere "Atmospheric oxygenation three billion years ago" largely devoid of oxygen "Atmospheric oxygenation three billion years ago" The rise of oxygen in Earth’s early ocean and atmosphere The rise of oxygen in Earth’s early ocean and atmosphere Lyons et al., 2014 Lyons et al. (2014) "Atmospheric oxygenation three billion years ago" "Atmospheric oxygenation three billion years ago" "Atmospheric oxygenation three billion years ago"