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Taxonomy
Xenasaphus was named by Jaanusson (1953) [Sepkoski's age data: O Llde]. It is not extant. Its type is Asaphus devexus.
It was assigned to Asaphidae by Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).
It was assigned to Asaphidae by Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1953 | Xenasaphus Jaanusson |
| 2002 | Xenasaphus Jell and Adrain p. 461 |
| 2002 | Xenasaphus 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. †Xenasaphus Jaanusson 1953
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Subg. †Xenasaphus (Delphasaphus) Ivantsov 2000
Subg. †Xenasaphus (Xenasaphus) Jaanusson 1953
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†Xenasaphus (Xenasaphus) devexus Eichwald 1840
†Xenasaphus (Xenasaphus) mjannili Ivantsov 2000
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Aberhan et al. 2004, Hendy et al. 2009, Hendy 2009 | |||||
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Aseri - Uhaku | Russian Federation (Novgorod Oblast) | X. devexus (235859) |