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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Khmeria problematica
Taxonomy
Khmeria problematica was named by Mansuy (1914). It is the type species of Khmeria.
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1914 | Khmeria problematica Mansuy p. 53 figs. Pl 1, fig 11; pl 2, figs 1,2; pl 5, fig 5; pl 6, fig 1 |
| 1930 | Osium importans de Gregorio p. 45 figs. Pl 17, figs 10-17 |
| 1954 | Khmeria importans Montanaro Gallitelli p. 55 figs. Pl 3, figs 1-22,28-32; pl 4, figs 1-6 |
| 1961 | Khmeria problematica Fontaine p. 218 figs. Pl 27, figs 1-6 |
| 1965 | Khmeria pumila Tchudinova p. 155 figs. Pl 11, figs 1-3 |
| 1977 | Khmeria importans Termier and Termier p. 46 |
| 2018 | Khmeria problematica Wendt p. 588 fig. 6A |
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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.
†Khmeria problematica Mansuy 1914
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Invalid names: Khmeria pumila Tchudinova 1965 [synonym], Osium importans de Gregorio 1930 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Wendt 2018 | Mostly individual, rarely colonial, double- valved shells composed of a conical base plate and an obtuse-angled or flat cover. Height 4–35 mm, width 4– 17 mm. Apical angle 22–90°. Rare tabulae may be present. |
Measurements
No measurements are available
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| Source: subp = subphylum | |||||
| Reference: Kiessling 2003 | |||||
Age range: base of the Wordian to the top of the Changhsingian or 266.90000 to 252.17000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Wordian | Indonesia | Khmeria problematica (75571) | |
| Wordian | Italy | Khmeria importans (113433) Osium importans (233340) | |
| Wordian - Capitanian | Cambodia | Khmeria problematica (233582) | |
| Capitanian | Cambodia | Khmeria problematica (124988) | |
| Wuchiapingian | Azerbaijan | Khmeria pumila (116766) | |
| Changhsingian | Azerbaijan | Khmeria pumila (116753) | |
| Changhsingian | Armenia | Khmeria pumila (113726) |