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Barrandagnostus
Taxonomy
Barrandagnostus was named by Ishvin (1960).
It was synonymized subjectively with Glyptagnostus by Jell and Adrain (2002).
It was assigned to Agnostidae by Naimark and Pegel (2017).
It was synonymized subjectively with Glyptagnostus by Jell and Adrain (2002).
It was assigned to Agnostidae by Naimark and Pegel (2017).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1960 | Barrandagnostus Ishvin |
| 2017 | Barrandagnostus Naimark and Pegel p. 1219 |
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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. †Barrandagnostus Ishvin 1960
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†Barrandagnostus barrandei Ivshin 1960
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Invalid names: Barrandagnostus tchatertensis Krys'kov 1963 [synonym]
Invalid names: Hozediasagnostus Ergaliev and Ergaliev 2008 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. B. Naimark and T. V. Pegel 2017 | Preglabellar median furrow com- plete or effaced at junction with border furrow, indented as short sulcus in front of anteroglabella, anteroglabella with truncate (exsagittal) front outline; cephalic cheeks with faint or well discernible rugae and, sometimes, with arcuate scrobicules around anteroglabella. Both cephalic and pygidium border structures narrow to moderate; glabellar F2 and F3 well developed. Pygidium bispinose, F1 and F2 straight and well developed, axis constricted across M2; posteroaxis moderately wide. |