Septentrioniidae is an extinct family of jawless fish belonging to the order
Birkeniiformes
Birkeniiformes (Birkeniida or Birkeniids) is an extinct order of jawless fish belonging to the class Anaspida.
Subtaxa
A newer taxonomy based on the work of Mikko's Phylogeny Archive, Nelson, Grande and Wilson 2016 and van der Laan 2018.
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References
External links
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Prehistoric jawless fish families
Birkeniiformes
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