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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. Its type is Pachyaspis typicalis.
It was assigned to Ptychopariidae by Jell and Adrain (2002); and to Ptychopariida by Palmer and Halley (1979), Eddy and McCollum (1998), Sepkoski (2002).
It was assigned to Ptychopariidae by Jell and Adrain (2002); and to Ptychopariida by Palmer and Halley (1979), Eddy and McCollum (1998), Sepkoski (2002).
Species
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
†Pachyaspis typicalis Resser 1938
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Hendy 2009, Aberhan et al. 2004 | |||||
Age range: base of the Taijangian to the top of the Merioneth or 506.50000 to 486.85000 Ma
Collections (18 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Delamaran | USA (Nevada) | P. gallagari (77203 77204 149565 149566 149568 149569 155995) P. longa (77188) | |
| Delamaran | USA (Nevada and California) | P. sp. (202) | |
| Delamaran | USA (Idaho) | P. sp. (207) | |
| Delamaran - Menevian | Mexico | P. sp., P. deborra, P. isabella (10687) | |
| Solvan | USA (Nevada) | P. sp. (9437) | |
| Taijangian | China (Liaoning) | P. benxiensis (128399) | |
| St Davids | Canada (British Columbia) | P. sp. (215) | |
| Topazan | USA (Idaho) | P. typicalis (50208) | |
| Merioneth | Canada (Alberta-British Columbia) | P. sp. (213) | |
| Merioneth | USA (Idaho) | P. sp. (198) | |
| Merioneth | USA (Arizona) | P. sp. (205) |