Diversity through time

How the number of kinds of sea animal has risen and crashed over 540 million years.

The chart The diversity curve with the five great extinctions marked.

Page type: A reference chart
Collection: Evolution of life, how evolution works
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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