
The Cenomanian is, in the ICS` geological timescale the oldest or earliest age of the Late Cretaceous epoch or the lowest stage of the Upper Cretaceous series. An age is a unit of geochronology: it is a unit of time; the stage is a unit in the stratigraphic column deposited during the corresponding age. Both age and stage bear the same name. As a....
Found on
http://en.wikipedia.org/wiki/Cenomanian

European stage of the lowermost Upper Cretaceous, spanning the time between 95 and 91 million years ago.
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https://www.encyclo.co.uk/local/21202
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