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Protoconus
Taxonomy
Protoconus was named by Yü (1979) [Sepkoski's age data: Cm Tomm-u Sepkoski's reference number: 1006]. It is not extant. Its type is Protoconus crestatus.
It was assigned to Cyrtonellida by Sepkoski (2002); to Igarkiellidae by Parkhaev (2002) and Parkhaev and Demidenko (2010); to Mollusca by Kouchinsky et al. (2017); and to Carinopeltidae by Wagner (2023).
It was assigned to Cyrtonellida by Sepkoski (2002); to Igarkiellidae by Parkhaev (2002) and Parkhaev and Demidenko (2010); to Mollusca by Kouchinsky et al. (2017); and to Carinopeltidae by Wagner (2023).
Species
P. crestatus (type species), P. elegans (syn. Purella tianzhushanensis)
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1979 | Protoconus Yü |
| 1990 | Patellella Vassiljeva |
| 2002 | Protoconus Parkhaev p. 35 |
| 2002 | Protoconus Sepkoski |
| 2010 | Protoconus Parkhaev and Demidenko pp. 1045, 1047 |
| 2017 | Protoconus Kouchinsky et al. p. 371 |
| 2023 | Protoconus Wagner p. G1511 |
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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. †Protoconus Yü 1979
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†Protoconus crestatus Yü 1979
Invalid names: Patellella Vassiljeva 1990 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. Y. Parkhaev and Y. Demidenko 2010 | "Shell cap-shaped, low conical, depressed, and moderately wide. Apex hooked and displaced posteriorly up to posterior apertural margin. Anterior field evenly convex. Posterior field short and concave. Aperture widely oval. Mid-dorsal buttress distinct, separated from rest of shell surface by prominent furrows." |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| Reference: Hendy et al. 2009 | |||||
Age range: Tommotian or 525.50000 to 521.00000 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Cambrian | China (Yunnan) | P. crestatus, Purella elegans (201551) | |
| Meishucunian | China (Hubei) | P. crestatus (107669) | |
| Meishucunian | China (Anhui) | P. sp. (107772) | |
| Meishucunian | China (Yunnan) | P. crestatus (201511) | |
| Meishucunian - Tommotian | China (Yunnan) | P. crestatus, P. elegans (96449) | |
| Tommotian | Russian Federation (Sakha) | P. crestatus (233169) | |
| Tommotian | China (Hubei) | Purella tianzhushanensis, Purella elegans (56807) | |
| Tommotian | Russian Federation (Krasnoyarsk Krai) | P. crestatus (233166) | |
| Tommotian - Botomian | Iran | Purella tianzhushanensis (10530) |