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Onymagnostus stenorrhachis

Trilobita - Agnostida - Ptychagnostidae

Taxonomy
Agnostus stenorrhachis was named by Grönwall (1902). It is not extant.

It was recombined as Ptychagnostus stenorrhachis by Hutchinson (1962); it was recombined as Onymagnostus stenorrhachis by Ergaliev and Ergaliev (2008).

Sister species lacking formal opinion data

View classification of included taxa

Synonymy list
YearName and author
1902Agnostus stenorrhachis Grönwall
1962Ptychagnostus stenorrhachis Hutchinson
2008Onymagnostus stenorrhachis Ergaliev and Ergaliev

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Ecdysozoa
Panarthropoda
phylumArthropodaLatreille 1829
RankNameAuthor
subphylumMandibulata
classTrilobitaWalch 1771
orderAgnostidaSalter 1864
familyPtychagnostidaeKobayashi 1939
genusOnymagnostusOpik 1979
speciesstenorrhachis(Grönwall 1902)

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.

Diagnosis
No diagnoses are available