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Chosenia
Taxonomy
Chosenia was named by Kobayashi (1934) [Sepkoski's age data: O Trem-u]. It is not extant. Its type is Chosenia laticephala.
It was assigned to Leiostegiidae by Jell and Adrain (2002); and to Ptychopariida by Sepkoski (2002).
It was assigned to Leiostegiidae by Jell and Adrain (2002); and to Ptychopariida by Sepkoski (2002).
Species
C. divergens, C. laticephala (type species)
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1934 | Chosenia Kobayashi |
| 2002 | Chosenia Jell and Adrain p. 358 |
| 2002 | Chosenia 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. †Chosenia Kobayashi 1934
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†Chosenia divergens Lu 1975
†Chosenia laticephala Kobayashi 1934
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Aberhan et al. 2004, Hendy et al. 2009, Whittington et al. 1997 | |||||
Age range: base of the Lancefieldian to the top of the Tremadoc or 484.30000 to 477.10000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Tremadoc | China (Heibei Provence) | C. laticephala (157261 157265) | |
| Tremadoc | China (Jilin Provence) | C. laticephala (157250) | |
| Lancefieldian | Australia (Tasmania) | C. adumsensis (165772) |