Amphigeisinidae is an extinct family of
conodont
Conodonts (Greek ''kōnos'', "cone", + ''odont'', "tooth") are an extinct group of agnathan (jawless) vertebrates resembling eels, classified in the class Conodonta. For many years, they were known only from their tooth-like oral elements, which ...
s in the order
Paraconodontida
Paraconodontida is an extinct order of conodonts.Phylum Conodonta Pander, 1856 and Nomenclatural Priority. LE Fahraeus, Systematic Zoology, 1983 It contains two superfamilies, Amphigeisinoidea and Furnishinoidea.
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Genera
Genera are:
* †''
Amphigeisina''
* †''
Gapparodus''
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Hagionella''
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Phakelodus''
* †''
Protohertzina
''Protohertzina'' is a genus of conodonts ( protoconodonts or paraconodonts) or, possibly, Chaetognaths, found at the beginning of the Cambrian explosion.
Protoconodonts are an extinct taxonomic group of conodonts.Zooproblematica and mollusca ...
''
References
External links
Paraconodontida
Conodont families
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