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Pachycranium
Taxonomy
Pachycranium was named by Ross (1951) [Sepkoski's age data: O Trem-u Sepkoski's reference number: 795].
It was assigned to Proetida by Sepkoski (2002); to Hystricuridae by Adrain et al. (2003); and to Hillyardininae by Adrain and Westrop (2007).
It was assigned to Proetida by Sepkoski (2002); to Hystricuridae by Adrain et al. (2003); and to Hillyardininae by Adrain and Westrop (2007).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1951 | Pachycranium Ross p. 72 |
| 2002 | Pachycranium Sepkoski |
| 2003 | Pachycranium Adrain et al. p. 559 |
| 2007 | Pachycranium Adrain and Westrop p. 230 |
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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