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Taxonomy
Cyclorisma was named by Dall (1902) [Sepkoski's age data: K Ceno-l K Maes-u]. It is not extant.
It was reranked as Cyprimeria (Cyclorisma) by Riedel (1933).
It was assigned to Cyprimeria by Riedel (1933); to Tapetinae by Vokes (1980); and to Veneroida by Sepkoski (2002).
It was reranked as Cyprimeria (Cyclorisma) by Riedel (1933).
It was assigned to Cyprimeria by Riedel (1933); to Tapetinae by Vokes (1980); and to Veneroida by Sepkoski (2002).
Species
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