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Taxonomy
Psilocephalinella was named by Kobayashi (1951) [Sepkoski's age data: Cm Trep O Trem-l Sepkoski's reference number: 378]. It is not extant.
It was assigned to Nileidae by Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).
It was assigned to Nileidae by Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1951 | Psilocephalinella Kobayashi |
| 1951 | Borthaspis Stubblefield |
| 2002 | Psilocephalinella Jell and Adrain p. 435 |
| 2002 | Borthaspis Sepkoski |
| 2002 | Psilocephalinella 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. †Psilocephalinella Kobayashi 1951
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Invalid names: Borthaspis Stubblefield 1951 [objective synonym]
Diagnosis
No diagnoses are available