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Tretocidaris
Taxonomy
Tretocidaris is a genus. It is extant.
It was assigned to Cidarinae by Fell (1966); and to Cidaroida by Sepkoski (2002).
It was assigned to Cidarinae by Fell (1966); and to Cidaroida by Sepkoski (2002).
Species
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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.
G. Tretocidaris
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†Tretocidaris dubia Clark 1907
†Tretocidaris perplexa Clark 1907
Diagnosis
No diagnoses are available