''Septentrionia'' is an extinct genus of jawless fish belonging to the family
Septentrioniidae
Anaspida ("shieldless ones") is an extinct group of jawless fish that existed from the early Silurian period to the late Devonian period. They were classically regarded as the ancestors of lampreys, but it is denied in recent phylogenetic analy ...
. It is the type genus of its family.
References
External links
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Birkeniiformes
Fossil taxa described in 2002
Birkeniiformes genera
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