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Ptychodesia
Taxonomy
Ptychodesia was named by Schrammen (1912) [Sepkoski's age data: K u]. It is not extant. Its type is Ptychodesia papillata.
It was assigned to Hexactinosa by Sepkoski (2002); and to Leptophragmatinae by Finks et al. (2004).
It was assigned to Hexactinosa by Sepkoski (2002); and to Leptophragmatinae by Finks et al. (2004).
Species
P. papillata (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1912 | Ptychodesia Schrammen |
| 2002 | Ptychodesia Sepkoski |
| 2004 | Ptychodesia Finks et al. |
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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