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Onkospira
Taxonomy
Onkospira was named by Zittel (1873) [Sepkoski's age data: J Oxfo-l K Barr Sepkoski's reference number: 615].
It was assigned to Amberleyidae by Kase (1984); and to Archaeogastropoda by Sepkoski (2002).
It was assigned to Amberleyidae by Kase (1984); and to Archaeogastropoda by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Diagnosis
No diagnoses are available