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Ajrikina
Taxonomy
Ajrikina was named by Kryskov (1963) [Sepkoski's age data: Cm uMid Cm Dres Sepkoski's reference number: 482,483]. It is not extant.
It was assigned to Alsataspididae by Jell and Adrain (2002); and to Ptychopariida by Sepkoski (2002).
It was assigned to Alsataspididae by Jell and Adrain (2002); and to Ptychopariida by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1963 | Ajrikina Kryskov |
| 1983 | Jiangnania Lin et al. |
| 1983 | Huamiaocephalus Qiu |
| 2002 | Jiangnania Jell and Adrain |
| 2002 | Ajrikina Jell and Adrain p. 338 |
| 2002 | Ajirikina Sepkoski |
| 2002 | Huamiaocephalus 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. †Ajrikina Kryskov 1963
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†Ajrikina elongata Ergaliev 1980
†Ajrikina hunanensis Peng 1987
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Invalid names: Jiangnania fengzuensis Lu and Lin 1989 [synonym], Jiangnania fuyangensis Lu and Lin 1989 [synonym]
†Ajrikina miranda Lin et al. 1983
†Ajrikina wannanensis Qiu 1983
Invalid names: Huamiaocephalus Qiu 1983 [synonym], Jiangnania Lin et al. 1983 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Whittington et al. 1997, Aberhan et al. 2004 | |||||
Age range: base of the Guzhangian to the top of the Ayusokkanian or 500.50000 to 497.00000 Ma
Collections (27 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Mayan | Russian Federation (Gorniy Altay Republic) | A. sp. (10175) | |
| Guzhangian | China (Zhejiang) | Jiangnania fengzuensis (125686) | |
| Guzhangian | China (Jiangsu) | Jiangnania miranda (127374) | |
| Guzhangian | China (Hunan) | A. hunanensis (49176 49177 49185 126323 126328 126329 126330 126440) A. wannanensis (126304 126313 126314 126317 126318) Jiangnania fuyangensis (130012) Jiangnania hunanensis (128931) | |
| Ayusokkanian | Russian Federation (Altai (Region)) | A. sp. (10064) | |
| Ayusokkanian | Kazakhstan | A. elongata (118235 118238 118239 118240 118241 118244) A. mera (118179 118182) |