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history:h_world [2020/03/10 20:39]
gary1 [Contents]
history:h_world [2020/05/28 22:27] (current)
gary1 [Contents]
Line 92: Line 92:
       * Silurian (405-425 million yrs ago) - land plants       * Silurian (405-425 million yrs ago) - land plants
       * Devonian (345-405 million yrs ago) - land animals       * Devonian (345-405 million yrs ago) - land animals
 +        * 360mya - extinction event appears to be due to a temporary loss of the ozone layer(([[https://scitechdaily.com/mass-extinction-event-caused-by-erosion-of-the-ozone-layer/]]))
       * Carboniferous (280-345 million yrs ago) - reptiles       * Carboniferous (280-345 million yrs ago) - reptiles
       * Permian (230-280 million yrs ago) - ice age - ice sheets cover much of Victoria       * Permian (230-280 million yrs ago) - ice age - ice sheets cover much of Victoria
history/h_world.txt ยท Last modified: 2020/05/28 22:27 by gary1