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Psephosthenaspis
Trilobita - Proetida - Bathyuridae
Taxonomy
Psephosthenaspis was named by Whittington (1953) [Sepkoski's age data: O Llvi-l].
It was assigned to Proetida by Sepkoski (2002); and to Bathyuridae by Jell and Adrain (2003).
It was assigned to Proetida by Sepkoski (2002); and to Bathyuridae by Jell and Adrain (2003).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1953 | Psephosthenaspis Whittington |
| 1991 | Ludvigsenella Tremblay and Westrop |
| 2002 | Psephosthenaspis Sepkoski, Jr. |
| 2003 | Psephosthenaspis Jell and Adrain p. 432 |
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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