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Borealaspis
Taxonomy
Borealaspis was named by Ludvigson (1976) [Sepkoski's age data: O Cara-m O Ashg-u Sepkoski's reference number: 690,795]. It is not extant.
It was assigned to Cheiruridae by Jell and Adrain (2002); and to Phacopida by Sepkoski (2002).
It was assigned to Cheiruridae by Jell and Adrain (2002); and to Phacopida by Sepkoski (2002).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1976 | Borealaspis Ludvigson |
| 1985 | Alreboaspis Pribyl and Vanek |
| 2002 | Borealaspis Jell and Adrain p. 351 |
| 2002 | Borealaspis 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. †Borealaspis Ludvigson 1976
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†Borealaspis biformis Ludvigsen 1976
†Borealaspis numitor Billings 1866
†Borealaspis whittakerensis Ludvigsen 1976
Invalid names: Alreboaspis Pribyl and Vanek 1985 [synonym]
Diagnosis
No diagnoses are available