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Spinagnostidae
Taxonomy
Spinagnostidae was named by Howell (1935).
It was assigned to Agnostida by Whittington et al. (1997); to Agnostina by Landing et al. (2008); and to Condylopygoidea by Naimark and Pegel (2017).
It was assigned to Agnostida by Whittington et al. (1997); to Agnostina by Landing et al. (2008); and to Condylopygoidea by Naimark and Pegel (2017).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1935 | Spinagnostidae Howell p. 218 |
| 1953 | Hypagnostidae Ivshin |
| 1997 | Spinagnostidae Whittington et al. p. 355 |
| 2004 | Hypagnostidae Paterson and Laurie p. 95 |
| 2008 | Spinagnostiidae Landing et al. p. 892 |
| 2009 | Hypagnostoidae Pour and Popov |
| 2017 | Spinagnostidae Naimark and Pegel p. 1202 |
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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.
Fm. †Spinagnostidae Howell 1935
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G. †Doryagnostus Kobayashi 1939
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†Doryagnostus incertus Brögger 1878
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Invalid names: Doryagnostus magister Whitehouse 1939 [synonym]
†Doryagnostus solidus Opik 1979
†Doryagnostus wasatchensis Robison 1978
Invalid names: Ceratagnostus Whitehouse 1939 [synonym], Rhodotypiscus Opik 1979 [synonym]
G. †Eoagnostus Resser and Howell 1938
G. †Pseudoperonopsis Harrington 1938
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†Pseudoperonopsis bifidus Hajrullina 1975
†Pseudoperonopsis karatauensis Ergaliev and Ergaliev 2008
Subfm. †Spinagnostinae Howell 1935
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G. †Hypagnostus Jaeckel 1909
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†Hypagnostus anhuiensis Lu and Zhu 1980
†Hypagnostus bilobatus Qian and Zhou 1984
†Hypagnostus brevifrons Angelin 1851
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Invalid names: Acadagnostus transversus Yang et al. 1993 [synonym], Hypagnostus brachydolonus Zhou and Yang 1977 [synonym], Hypagnostus kendectasicus Kryskov 1960 [synonym], Hypagnostus parabrevifrons Yang et al. 1993 [synonym]
†Hypagnostus gibber Yang et al. 1993
†Hypagnostus hunanicus Lu 1957
†Hypagnostus parvifrons Linnarsson 1869
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Invalid names: Hypagnostus correctus Opik 1967 [synonym], Hypagnostus dabashanensis Yang et al. 1993 [synonym]
†Hypagnostus prodigialis Ergaliev and Ergaliev 2008
†Hypagnostus scrobiculatus Westergard 1946
†Hypagnostus transversus Yang et al. 1993
†Hypagnostus truncatus Brogger 1878
†Hypagnostus vulgarus Qian and Qiu 1983
Invalid names: Breviagnostus Liu 1982 [synonym], Cyclopagnostus Howell 1937 [synonym], Spinagnostus Howell 1935 [synonym]
Invalid names: Hypagnostidae Ivshin 1953 [synonym]
Diagnosis
No diagnoses are available