Eric Walker added Culprit for Mass Extinction 445 Million Years Ago? Global Warming - The New York Times to a number of topics

Eric Walker added Ordovician–Silurian extinction events - Wikipedia to Ordovician-Silurian extinction events and Late Ordovician mass extinction (LOME)

Eric Walker added Culprit for Mass Extinction 445 Million Years Ago? Global Warming - The New York Times and Ordovician–Silurian extinction events - Wikipedia to Late Ordovician mass extinction (LOME), and added Late Ordovician mass extinction (LOME) to Ordovician-Silurian extinction events

Eric Walker added Late Ordovician mass extinction (LOME) and Ordovician–Silurian extinction events - Wikipedia to Ordovician-Silurian extinction events, and added Ordovician-Silurian extinction events to Ordovician period, Silurian period and Extinction events