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Niponaster
Discussion
Cretaceous spatangiud "Nipponaster" in Sepkoski's Genus Compendium is a misspelling of Niponaster Lambert 1920, NOT Tertiary clypyasteroid Nipponaster Durham 1952
Taxonomy
Niponaster was named by Lambert (1920) [Sepkoski's age data: K Camp-l K Maes-l Sepkoski's reference number: 714]. It is not extant.
It was assigned to Spatangoida by Fischer (1966) and Sepkoski (2002).
It was assigned to Spatangoida by Fischer (1966) and 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. †Niponaster Lambert 1920
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Diagnosis
No diagnoses are available