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Santonian
The
Santonian
is an
age
in the
geologic timescale
or a
chronostratigraphic
stage
. It is a subdivision of the
Late Cretaceous
epoch
or
Upper Cretaceous
series
. It spans the time between 86.3 ± 0.7 mya (
million years ago
) and 83.6 ± 0.7 mya. The Santonian is preceded by the
Coniacian
and is followed by the
Campanian
.
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