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Yixian Formation
The
Yixian Formation
is a
geological formation
in
Jinzhou
,
Liaoning
,
People's Republic of China
, that spans 11 million years during the
early Cretaceous
period. It is known for its exquisitely preserved
fossils
, and is mainly composed of
basalts
interspersed with
siliciclastic
sediments.
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