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Ptychoblastus
Taxonomy
Ptychoblastus was named by Fay (1960) [Sepkoski's age data: C Vise-u Sepkoski's reference number: 520]. It is not extant.
It was assigned to Granatocrinidae by Beaver et al. (1967); and to Spiraculata by Sepkoski (2002).
It was assigned to Granatocrinidae by Beaver et al. (1967); and to Spiraculata by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1960 | Ptychoblastus Fay p. 1198 |
| 1967 | Ptychoblastus Beaver et al. p. S427 |
| 2002 | Ptychoblastus 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. †Ptychoblastus Fay 1960
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Diagnosis
No diagnoses are available