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Piretella
Taxonomy
Piretella is a genus. It is not extant. It is the type genus of Piretellinae.
It was assigned to Piretellinae by Jaanusson (1957); to Piretellidae by Benson et al. (1961); and to Palaeocopida by Sepkoski (2002).
It was assigned to Piretellinae by Jaanusson (1957); to Piretellidae by Benson et al. (1961); and to Palaeocopida by Sepkoski (2002).
Synonymy list
Year | Name and author |
---|---|
1957 | Piretella Jaanusson pp. 279 - 280 |
1961 | Piretella Benson et al. p. Q146 |
2002 | Piretella 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. †Piretella
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Diagnosis
Reference | Diagnosis | |
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V. Jaanusson 1957 | Unisulcate, with a !arge, röunded preadductorial knob. Sulcus and knob surrounded by a crest and the dorsal pli ca. Velar structure moderate! y wide, anteriorly and anteroventrally developed as a frill, and in most species as a row of stout spines posteroventrally. In one species the frill seems to extend from one cardinal corner to the other. Heteromorphs with a strongly convex dolon. |
Measurements
No measurements are available
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Source: c = class | |||||
Reference: Kiessling 2004 |
Age range: base of the Late/Upper Llanvirn to the top of the Vormsi or 463.50000 to 449.50000 Ma
Collections (7 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Early/Lower Llandeilo | Sweden | P. sp. (2938) | |
Late/Upper Llanvirn | Sweden | P. sp. (2929 2934) | |
Soudleyan - Marshbrookian | Sweden | P. sp. (2941) | |
Caradoc | Sweden (Vastergotland) | P. triebeli (77099) | |
Nabala | Latvia (Daugavpils) | P. acmaea (192988) | |
Vormsi | Latvia (Daugavpils) | P. acmaea (192989) |