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Oxfordian (stage)
The
Oxfordian
is, in the
ICS
'
geologic timescale
, the earliest
age
of the
Late Jurassic
epoch
, or the lowest
stage
of the
Upper Jurassic
series
. It spans the time between 163.5 ± 4 Ma and 157.3 ± 4 Ma (million years ago). The Oxfordian is preceded by the
Callovian
and is followed by the
Kimmeridgian
.
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