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Ditremaster
Taxonomy
Ditremaster is a genus. It is not extant.
It was assigned to Hemiasteridae by Fischer (1966) and Lindley (2001); and to Spatangoida by Sepkoski (2002).
It was assigned to Hemiasteridae by Fischer (1966) and Lindley (2001); and to Spatangoida by Sepkoski (2002).
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.
G. †Ditremaster
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Diagnosis
No diagnoses are available