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Taxonomy
Lichas (Dicranogmus) ptyonurus was named by Hall and Clarke (1888). Its type specimen is NYSM 4555 [lectotype selected by Whittington 1961] and is a 3D body fossil. It is the type species of Richterarges.
It was recombined as Hemiarges ptyonurus by Whittington (1961); it was recombined as Richterarges ptyonurus by Adrain (1994).
It was recombined as Hemiarges ptyonurus by Whittington (1961); it was recombined as Richterarges ptyonurus by Adrain (1994).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1888 | Lichas (Dicranogmus) ptyonurus Hall and Clarke p. 86 |
| 1961 | Hemiarges ptyonurus Whittington p. 435 |
| 1994 | Richterarges ptyonurus Adrain p. 1084 |
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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.
†Richterarges ptyonurus Hall and Clarke 1888
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Diagnosis
No diagnoses are available