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Taxonomy
Hemiarges ethnikos was named by Lane et al. (1980). Its type specimen is MGUH 15079, a pygidium, and it is a 3D body fossil. Its type locality is boulder erratic, Newmann Bugt, which is in a Pridoli marine sandstone in the "Polaris Harbour" Formation of Greenland.
It was recombined as Richterarges ethnikos by Adrain (1994).
It was recombined as Richterarges ethnikos by Adrain (1994).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1980 | Hemiarges ethnikos Lane et al. |
| 1994 | Richterarges ethnikos 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 ethnikos Lane et al. 1980
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. M. Adrain 1994 | Richterarges ethnikos has a plesiomorphic pattern of nine border spines similar to that of Borealarges, although other aspects of its morphology, particularly cranidial features, make assignment to Richterarges unambiguous. |