Aptian

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Aptian stage is a faunal stage of the Early Cretaceous epoch in the geologic timescale, that extends from 125 Ma to 112 Ma (million years ago), approximately. The Aptian stage succeeds the Barremian stage and precedes the Albian stage, all in the same epoch.

[edit] References

The International Commission on Stratigraphy

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Cretaceous period
Lower/Early Cretaceous	Upper/Late Cretaceous
Berriasian \| Valanginian \| Hauterivian Barremian \| Aptian \| Albian	Cenomanian \| Turonian \| Coniacian Santonian \| Campanian \| Maastrichtian