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Acmarhachis
Taxonomy
Acmarhachis was named by Resser (1938) [Sepkoski's age data: ].
It was assigned to Pseudagnostidae by Westrop et al. (1996); to Agnostidae by Whittington et al. (1997) and Jell and Adrain (2002); and to Agnostida by Sepkoski (2002).
It was assigned to Pseudagnostidae by Westrop et al. (1996); to Agnostidae by Whittington et al. (1997) and Jell and Adrain (2002); and to Agnostida by Sepkoski (2002).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1938 | Acmarhachis Resser |
| 1940 | Cyclagnostus Lermontova |
| 1996 | Acmarhacis Westrop et al. p. 820 |
| 1997 | Acmarhachis Whittington et al. p. 349 |
| 2002 | Acmarhachis Jell and Adrain p. 337 |
| 2002 | Acmarhachis 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. †Acmarhachis Resser 1938
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†Acmarhachis acuta Kobayashi 1938
†Acmarhachis apicula Oepik 1967
†Acmarhachis hybrida Shergold 1980
†Acmarhachis karatauensis Ergaliev 1980
†Acmarhachis kindlei Westrop and Eoff 2012
†Acmarhachis longispinus Ergaliev 1980
†Acmarhachis punctatus Ergaliev 1980
†Acmarhachis typicalis Resser 1938
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Invalid names: Cyclagnostus yaogongbuensis Lu and Lin 1987 [synonym]
†Acmarhachis whittingtoni Westrop and Eoff 2012
Invalid names: Cyclagnostus Lermontova 1940 [synonym]
Diagnosis
No diagnoses are available