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Taxonomy
Ptychopyge was named by Angelin (1854) [Sepkoski's age data: O Aren O Llvi-u]. It is not extant.
It was assigned to Asaphidae by Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).
It was assigned to Asaphidae by Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1854 | Ptychopyge Angelin |
| 2002 | Ptychopyge Jell and Adrain p. 436 |
| 2002 | Ptychopyge 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.
Diagnosis
No diagnoses are available