Ypresian

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The Ypresian is the first stage of the Eocene Epoch. It spans the time between 55.8 ± 0.2 Ma and 48.6 ± 0.2 Ma (million years ago). The stage is named after Ypres, Belgium. The famous Messel shales in Germany are from this age. Primates had appeared by 55 Ma, although they may have existed as early as the Late Cretaceous, 90 Ma.

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[edit] References

Paleogene period
Paleocene epoch Eocene epoch Oligocene epoch
Danian | Selandian
Thanetian		 Ypresian | Lutetian
Bartonian | Priabonian		 Rupelian | Chattian
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