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Tcherskidium
Taxonomy
Tcherskidium is a genus. It is not extant.
It was assigned to Pentamerida by Sepkoski (2002); and to Virgianinae by Williams et al. (2002).
It was assigned to Pentamerida by Sepkoski (2002); and to Virgianinae by Williams et al. (2002).
Species
Species lacking formal opinion data
Entered
by J. Sepkoski on 2003-01-23
Synonymy list
| Year | Name and author |
|---|---|
| 2002 | Tscherskidium Sepkoski |
| 2002 | Tcherskidium Williams et al. p. 967 |
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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. †Tcherskidium
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†Tcherskidium ulkuntasense Rukavishnikova and Sapelnikov 1973
†Tcherskidium unicum Nikolaev 1968
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Hendy 2009, Aberhan et al. 2004 | |||||
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Katian | Kazakhstan | T. ulkuntasense (80656) | |
| Katian | USA (Alaska) | T. tenuicostatus (223863) | |
| Ashgill | Russian Federation (Chukotka) | T. tchukoticum (80675) | |
| Ashgill | Russian Federation (Taimyr) | T. sp. (37638) T. unicum (37641) | |
| Ashgill | USA (Alaska) | T. unicum (100352) Tscherskidium sp. (113018 114831 114832) | |
| Ashgill | China (Jiangxi) | T. sp. (80138 80139) |