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Paratetradium
Taxonomy
Paratetradium was named by Sokolov (1955) [Sepkoski's age data: O Cara-m O Ashg]. It is not extant.
It was assigned to Tetradiidae by Hill (1981); and to Tabulata by Sepkoski (2002).
It was assigned to Tetradiidae by Hill (1981); and to Tabulata by Sepkoski (2002).
Synonymy list
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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. †Paratetradium Sokolov 1955
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, subc = subclass, c = class | |||||
| Reference: Kiessling 2004 | |||||
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Sandbian - Katian | Russian Federation (Siberia) | P. halysitoides (206485) | |
| Caradoc - Ashgill | China (XinJiang) | P. sp. (20785) | |
| Shermanian - Edenian | Canada (Québec) | P. sp. (27235) | |
| Katian - Hirnantian | Russian Federation (Siberia) | P. quadrilobatum (205662) |