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Skehanos quadrangularis
Taxonomy
Arionellus quadrangularis was named by Whitfield (1884) [Middle Cambrian, Massachusetts].
It was recombined as Agraulos quadrangularis by Walcott (1884); it was recombined as Skreiaspis quadrangularis by Fletcher (1972); it was recombined as Skehanos quadrangularis by Fletcher (2017).
It was recombined as Agraulos quadrangularis by Walcott (1884); it was recombined as Skreiaspis quadrangularis by Fletcher (1972); it was recombined as Skehanos quadrangularis by Fletcher (2017).
Synonymy list
| Year | Name and author |
|---|---|
| 1884 | Agraulos quadrangularis Walcott pp. 14, 44, 48, 49 figs. pl. 7, fig. 1 |
| 1884 | Arionellus quadrangularis Whitfield p. 147 figs. pl. 14, fig. 8 |
| 1972 | Skreiaspis quadrangularis Fletcher figs. pl. 64, figs 2–7. |
| 2017 | Skehanos quadrangularis Fletcher pp. 211 - 214 fig. 19–21 |
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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.
†Skehanos quadrangularis Whitfield 1884
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Diagnosis
No diagnoses are available