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Symphysurus
Trilobita - Asaphida - Nileidae
Taxonomy
Symphysurus was named by Goldfuss (1843). Its type is Asaphus palpebrosus.
It was assigned to Asaphida by Sepkoski (2002); and to Nileidae by Fortey (1975), Hoel (1999) and Jell and Adrain (2003).
It was assigned to Asaphida by Sepkoski (2002); and to Nileidae by Fortey (1975), Hoel (1999) and Jell and Adrain (2003).
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1843 | Symphysurus Goldfuss |
| 1975 | Symphysurus Fortey |
| 1999 | Symphysurus Hoel |
| 2002 | Symphysurus Sepkoski, Jr. |
| 2003 | Symphysurus Jell and Adrain p. 450 |
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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.
Diagnosis
No diagnoses are available