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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 Asaphida by Sepkoski (2002); and to Asaphidae by Jell and Adrain (2002).
It was assigned to Asaphida by Sepkoski (2002); and to Asaphidae by Jell and Adrain (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
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†Xenasaphus (Delphasaphus) delphinus Lawrow 1856
Subg. †Xenasaphus (Xenasaphus) Jaanusson 1953
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†Xenasaphus (Xenasaphus) devexus Eichwald 1840
†Xenasaphus (Xenasaphus) mjannili Ivantsov 2000
Diagnosis
No diagnoses are available