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Psilonychia
Taxonomy
Psilonychia was named by Ulrich (1893) [Sepkoski's age data: O u]. It is not extant.
It was assigned to Ambonychiidae by Isberg (1934); and to Pterioida by Sepkoski (2002).
It was assigned to Ambonychiidae by Isberg (1934); and to Pterioida 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.
Diagnosis
No diagnoses are available