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Nipponitrigonia
Taxonomy
Nipponitrigonia was named by Cox (1952) [Sepkoski's age data: J Call K Camp Sepkoski's reference number: 93,1124]. It is not extant. Its type is Trigonia kikuchiana.
It was assigned to Trigoniidae by Cox (1952) and Hayami (1975); and to Trigonioida by Sepkoski (2002).
It was assigned to Trigoniidae by Cox (1952) and Hayami (1975); and to Trigonioida 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.
G. †Nipponitrigonia Cox 1952
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†Nipponitrigonia kikuchiana Yokoyama 1891
†Nipponitrigonia naumanni Yehara 1923
Diagnosis
No diagnoses are available