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Emmonsaspis
Taxonomy
Emmonsaspis was named by Resser and Howell (1938) [Sepkoski's age data: Cm Boto Sepkoski's reference number: 1131].
It was assigned to Problematica by Bengtson (1992); and to Cnidaria by Sepkoski (2002).
It was assigned to Problematica by Bengtson (1992); and to Cnidaria by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1938 | Emmonsaspis Resser and Howell p. 233 |
| 1992 | Emmonsaspis Bengtson p. 1033 |
| 2002 | Emmonsaspis 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. †Emmonsaspis Resser and Howell 1938
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†Emmonsaspis cambriensis Walcott 1891
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Invalid names: Phyllograptus simplex Walcott 1886 [synonym]
Diagnosis
No diagnoses are available