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Promyalina kochi
Taxonomy
Myalina kochi was named by Spath (1930).
It was recombined as Promyalina kochi by Dagis et al. (1996).
It was recombined as Promyalina kochi by Dagis et al. (1996).
Synonymy list
| Year | Name and author |
|---|---|
| 1930 | Myalina kochi Spath |
| 1935 | Myalina kochi Spath figs. Pl 20, fig 4 |
| 1996 | Promyalina kochi Dagis et al. p. 30 figs. Pl 5, figs 7-9 |
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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.
†Promyalina kochi Spath 1930
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 1 | 44.3 | - | - | - | - | |
| valve height | 3 | 35.4 | 30.3 | 39.9 | 36.7 | 4.89 |
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| Source: subc = subclass, c = class | |||||
| References: Eaton 1871, Aberhan et al. 2004 | |||||
Age range: Spathian or 251.30000 to 247.20000 Ma
Collections (19 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Induan | Svalbard and Jan Mayen | Myalina kochi (212933 212966) | |
| Griesbachian | Svalbard and Jan Mayen | Myalina kochi (212783) | |
| Smithian | Russian Federation | Promyalina kochi (99890) | |
| Spathian | Russian Federation | Promyalina kochi (99908 99909 99910 99911 99917 99918 99919 107200) | |
| Dienerian | Greenland | Myalina kochi (118589 118715 118721 118722 118740 118742 118780) |