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Yukonaspis
Taxonomy
Yukonaspis was named by Kobayashi (1936) [Sepkoski's age data: Cm Fran-u Cm Trep-u]. It is not extant.
It was assigned to Ptychopariida by Sepkoski (2002); and to Catillicephalidae by Jell and Adrain (2002).
It was assigned to Ptychopariida by Sepkoski (2002); and to Catillicephalidae by Jell and Adrain (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1936 | Yukonaspis Kobayashi |
| 2002 | Yukonaspis Jell and Adrain p. 462 |
| 2002 | Yukonaspis 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. †Yukonaspis Kobayashi 1936
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Diagnosis
No diagnoses are available