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Xixionopsis
Taxonomy
Xixionopsis is a genus. It is not extant.
It was assigned to Bairdiidae by Becker and Wang (1992); and to Metacopida by Sepkoski (2002).
It was assigned to Bairdiidae by Becker and Wang (1992); and to Metacopida by Sepkoski (2002).
Synonymy list
Year | Name and author |
---|---|
1992 | Xixionopsis Becker and Wang p. 38 |
2002 | Xixionopsis Sepkoski |
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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. †Xixionopsis
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Diagnosis
No diagnoses are available