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Taxonomy
Xenocheilos was named by Wilson (1949) [Sepkoski's age data: Cm Fran-l Sepkoski's reference number: 379,697]. It is not extant.
It was assigned to Norwoodiidae by Jell and Adrain (2002); to Ptychopariida by Sepkoski (2002); and to Nepeidae by Westrop and Adrain (2009).
It was assigned to Norwoodiidae by Jell and Adrain (2002); to Ptychopariida by Sepkoski (2002); and to Nepeidae by Westrop and Adrain (2009).
Species
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1949 | Xenocheilos Wilson |
| 2002 | Xenocheilos Jell and Adrain p. 460 |
| 2002 | Xenocheilos Sepkoski |
| 2009 | Xenocheilos Westrop and Adrain p. 356 |
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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. †Xenocheilos Wilson 1949
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†Xenocheilos minutum Wilson 1949
†Xenocheilos spineum Wilson 1951
Diagnosis
No diagnoses are available