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Pemphigaspis
Taxonomy
Pemphigaspis was named by Hall (1863) [Sepkoski's age data: Cm Dres-l]. It is not extant.
It was assigned to Asaphida by Sepkoski (2002); and to Catillicephalidae by Jell and Adrain (2002).
It was assigned to Asaphida by Sepkoski (2002); and to Catillicephalidae by Jell and Adrain (2002).
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1863 | Pemphigaspis Hall |
| 1943 | Hallaspis Raasch and Lochman |
| 1951 | Hallaspis Tasch |
| 2002 | Pemphigaspis Jell and Adrain p. 423 |
| 2002 | Pemphigaspis 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. †Pemphigaspis Hall 1863
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Invalid names: Hallaspis Raasch and Lochman 1943 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Aberhan et al. 2004, Whittington et al. 1997 | |||||
Age range: base of the Ayusokkanian to the top of the Tremadoc or 499.50000 to 477.10000 Ma
Collections (12 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Marjumian | USA (Utah) | P. sp. (230681) | |
| Marjumian | USA (Wisconsin) | P. sp. (230) | |
| Marjumian | USA (Texas) | P. inexpectans (208621) | |
| Ayusokkanian | Kazakhstan | P. sp. (118158) | |
| Dresbachian | Canada (Yukon) | P. intermedia (55211) | |
| Dresbachian | USA (Virginia) | P. sp. (62201) | |
| Dresbachian | USA (South Dakota) | P. bullata (7199 8021) P. sp. (231) | |
| Merioneth | USA (Pennsylvania) | Hallaspis matutina (77696) P. intermedia (77700) | |
| Tremadoc | Argentina | P. perforata (8897) |