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Taxonomy
Symphysurus was named by Goldfuss (1843). Its type is Asaphus palpebrosus.
It was assigned to Nileidae by Fortey (1975), Hoel (1999) and Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).
It was assigned to Nileidae by Fortey (1975), Hoel (1999) and Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1843 | Symphysurus Goldfuss |
| 1975 | Symphysurus Fortey |
| 1999 | Symphysurus Hoel |
| 2002 | Symphysurus Jell and Adrain p. 450 |
| 2002 | Symphysurus 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. †Symphysurus Goldfuss 1843
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†Symphysurus angustatus Sars and Boeck 1838
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Invalid names: Symphysurus socialis Linnarsson 1869 [synonym]
†Symphysurus arcticus Fortey 1975
†Symphysurus goldfussi Walcott 1884
†Symphysurus palpebrosus Barrande 1852
Diagnosis
No diagnoses are available