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Placuna (Ephippium)
Taxonomy
Placuna (Ephippium) was named by Röding (1798) [m. kosnik taxon no: 8322]. It is extant.
It was Placenta (Ephippium) by Oostingh (1935); it was reranked as Ephippium by Vokes (1980) and Kosnik (2002).
It was assigned to Placenta by Oostingh (1935); to Placuna by Lamprell and Whitehead (1992); and to Anomiidae by Vokes (1980) and Kosnik (2002).
It was Placenta (Ephippium) by Oostingh (1935); it was reranked as Ephippium by Vokes (1980) and Kosnik (2002).
It was assigned to Placenta by Oostingh (1935); to Placuna by Lamprell and Whitehead (1992); and to Anomiidae by Vokes (1980) and Kosnik (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1798 | Placuna (Ephippium) Röding p. 166 |
| 1935 | Placenta (Ephippium) Oostingh p. 160 |
| 1980 | Ephippium Vokes p. 59 |
| 1992 | Placuna (Ephippium) Lamprell and Whitehead p. 34 |
| 2002 | Ephippium Kosnik |
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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.
Subg. Placuna (Ephippium) Röding 1798
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Placuna (Ephippium) ephippium Philipsson 1788
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Invalid names: Anomia sella Gmelin 1791 [synonym], Ephippium polonicum Röding 1798 [synonym], Placuna papyracea Lamarck 1819 [synonym], Placuna quadrangula Philipsson 1788 [synonym]
†Placuna (Ephippium) lincolnii Gray 1849
†Placuna (Ephippium) lobata Sowerby 1871
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, Kiessling 2004 | |||||
Age range
Maximum range based only on fossils: base of the Late/Upper Miocene to the top of the Early/Lower Pliocene or 11.60800 to 3.60000 Ma
Minimum age of oldest fossil (stem group age): 5.333 Ma
Minimum age of oldest fossil (stem group age): 5.333 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Miocene | Indonesia (Borneo) | Placuna ephippium, Placuna quadrangula (42311) | |
| Late/Upper Miocene | Indonesia | Placuna ephippium (70078) | |
| Early/Lower Pliocene | Philippines (Bulacan) | Placuna quadriangularis (96677) | |
| Pliocene | Indonesia | Placenta ephippium (84517 84520 84523 84527 84532 84533) | |
| Pliocene - Pleistocene | Malaysia | Placenta ephippium (72092 72093 72096 72098 72105) |