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Onymagnostus stenorrhachis
Taxonomy
Agnostus stenorrhachis was named by Grönwall (1902). It is not extant.
It was recombined as Ptychagnostus (Triplagnostus) stenorrhachis by Westergård (1946); it was recombined as Ptychagnostus stenorrhachis by Hutchinson (1962); it was recombined as Onymagnostus stenorrhachis by Ergaliev and Ergaliev (2008).
It was recombined as Ptychagnostus (Triplagnostus) stenorrhachis by Westergård (1946); it was recombined as Ptychagnostus stenorrhachis by Hutchinson (1962); it was recombined as Onymagnostus stenorrhachis by Ergaliev and Ergaliev (2008).
Synonymy list
| Year | Name and author |
|---|---|
| 1902 | Agnostus stenorrhachis Grönwall |
| 1946 | Ptychagnostus (Triplagnostus) stenorrhachis Westergård p. 72 figs. pl. 10 f. 3-4 |
| 1962 | Ptychagnostus stenorrhachis Hutchinson |
| 2008 | Onymagnostus stenorrhachis Ergaliev and Ergaliev |
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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.
†Onymagnostus stenorrhachis Grönwall 1902
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order | |||||
| References: Hendy 2009, Kiessling 2004 | |||||
Age range: Zhanaarykian or 503.00000 to 500.50000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Menevian | Sweden (Scania) | Ptychagnostus stenorrhachis (225250) | |
| Zhanaarykian | Kazakhstan | Onymagnostus stenorrhachis (9962 118097) |