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Onymagnostus
Taxonomy
Onymagnostus was named by Opik (1979) [Sepkoski's age data: Cm mMid-u Cm uMid-u]. It is not extant.
It was assigned to Ptychagnostidae by Whittington et al. (1997); and to Agnostida by Sepkoski (2002).
It was assigned to Ptychagnostidae by Whittington et al. (1997); and to Agnostida by Sepkoski (2002).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1979 | Onymagnostus Opik |
| 1979 | Onymagnostus (Agnostonymus) Öpik p. 114 |
| 1997 | Onymagnostus Whittington et al. p. 352 |
| 2002 | Onymagnostus 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. †Onymagnostus Opik 1979
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†Onymagnostus convexus Ergaliev and Ergaliev 2008
†Onymagnostus cuneiformis Ergaliev and Ergaliev 2008
†Onymagnostus hybridus Broegger 1878
†Onymagnostus mundus Öpik 1979
†Onymagnostus ovaliformis Ergaliev and Ergaliev 2008
†Onymagnostus rotundatus Ergaliev 1980
†Onymagnostus semiermis Öpik 1979
†Onymagnostus stenorrhachis Grönwall 1902
Invalid names: Agnostonymus Öpik 1979 [synonym]
Diagnosis
No diagnoses are available