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Additional
Protacanthopterygii
English Wikipedia - The Free Encyclopedia
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Protacanthopterygii
Protacanthopterygii
is a
ray-finned fish
taxon
ranked as a
superorder
of the
infraclass
Teleostei
. They inhabit both
marine
and
freshwater
habitats
. They appear to have
evolved
in the
Cretaceous
or perhaps late
Jurassic
, originating probably roughly 150
million years ago
;
fossils
of them and the closely related Otocephala are known from throughout the Cretaceous.
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