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Ustritskia
Taxonomy
Ustritskia was named by Chen and Shi (2006). It is not extant. Its type is Beecheria pseudotimanicum.
It was assigned to Dielasmatidae by Chen and Shi (2006).
It was assigned to Dielasmatidae by Chen and Shi (2006).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 2006 | Ustritskia Chen and Shi p. 38 |
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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. †Ustritskia Chen and Shi 2006
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†Ustritskia minima Merla 1934
†Ustritskia pseudotimanicum Ustritsky 1960
Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 2 | 5.71 | 3.70 | 8.80 | 6.25 | 3.61 |
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Collections (16 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Gzhelian | China (Guangxi) | Beecheria minima (134310) | |
| Asselian | China (Guangxi) | Beecheria minima (134318) | |
| Artinskian | China (Xinjiang) | U. minima (62826 62827) | |
| Kungurian | China (Xinjiang) | U. minima (62737 62754 62755 62756 62808 62810 62811 62834) U. pseudotimanicum (62740 62745 62748 62753) |