Temperature through time

The Earth’s average temperature over 540 million years, from two independent studies.

The chart Both temperature curves on one chart, with their ranges.

Page type: A reference chart
Collection: Climate history, how we know
When: About 540 million years ago to now, in the Ediacaran, Cambrian, Ordovician, Silurian, Devonian, Carboniferous, Permian, Triassic, Jurassic, Cretaceous, Paleogene, Neogene and Quaternary. The finished piece will give dates from its sources.
Status: Planned and outlined. Every fact in it will be checked against a named source and listed on Sources before it goes up.

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