Taxonavigation
Superregnum: Eukaryota
Regnum: Animalia
Phylum: Mollusca
Classis: †Helcionelloida
Ordo: Helcionellida
Familiae (8):
Coreospiridae -
Helcionellidae -
Igarkiellidae -
Procarinariidae -
Rugaeconidae -
Stenothecidae -
Trenellidae -
Yochelcionellidae
References
Links
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