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Ypresian

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The Ypresian is the first stage of the Eocene Epoch and usually corresponds to the Early Eocene subepoch, though sometimes the Lutetian is included therein.

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[citation needed], although the molecular clock and new paleontological finds state that they may have existed as early as the Late Cretaceous, 90 Ma.

See alsoEdit

References Edit

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


Geological time spiral

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