The Birkenia was a 10 cm long ancient jawless fish that lived in oceans millions of years ago, characterized by its unique sucking mouth mechanism for feeding and protective overlapping scales that provided defense against predators in its harsh underwater environment.
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Birkenia: Jawless Fish with Protective ScalesAñadido:
A key resident of these beds is this Burkenia, a 10 cm long fish that sucks up food through its jawless mouth.
It also has protective overlapping [music] scales for defense.
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