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Pachyaspis
Taxonomy
Pachyaspis was named by Resser (1938) [Sepkoski's age data: Cm Tojo Cm mMid-l Sepkoski's reference number: 16,81]. It is not extant.
It was assigned to Ptychopariidae by Jell and Adrain (2002); and to Ptychopariida by Palmer and Halley (1979), Eddy and McCollum (1998) and Sepkoski (2002).
It was assigned to Ptychopariidae by Jell and Adrain (2002); and to Ptychopariida by Palmer and Halley (1979), Eddy and McCollum (1998) and Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1938 | Pachyaspis Resser |
| 1979 | Pachyaspis Palmer and Halley p. 112 |
| 1998 | Pachyaspis Eddy and McCollum p. 881 |
| 2002 | Pachyaspis Jell and Adrain p. 416 |
| 2002 | Pachyaspis 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. †Pachyaspis Resser 1938
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†Pachyaspis benxiensis Guo and An 1982
†Pachyaspis deborra Lochman 1952
†Pachyaspis gallagari Fritz 1968
†Pachyaspis isabella Lochman 1952
†Pachyaspis longa Fritz 1968
Diagnosis
No diagnoses are available