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Taxonomy
Amphidesma was named as a genus. It is extant.
It was reranked as Semele (Amphidesma) by Coan et al. (2000).
It was assigned to Semele by Coan et al. (2000); to Veneroida by Sepkoski (2002); and to Amphidesmatidae by Bouchet et al. (2010).
It was reranked as Semele (Amphidesma) by Coan et al. (2000).
It was assigned to Semele by Coan et al. (2000); to Veneroida by Sepkoski (2002); and to Amphidesmatidae by Bouchet et al. (2010).
Subtaxa
Species lacking formal opinion data
Semele alumensis, Semele alumensis, Semele alumrensis, Semele burnsi, Semele callocinnata, Semele claytoni, Semele compacta, Semele cytheroidea, Semele ebllastriata, Semele ferreirae, Semele guaynasensis, Semele johnsoni, Semele johnsoniana, Semele jovis, Semele jukesi, Semele langdoniana, Semele mississippiensis, Semele modesta, Semele monroensis, Semele mutica, Semele neuvillei, Semele nuculoides, Semele nuculoides, Semele pacifica, Semele paraensis, Semele proficus, Semele purpurescens, Semele scintillata, Semele sellardsi, Semele sellardsi, Semele silicata, Semele smithii, Semele staminea, Semele stearnsii, Semele striulata, Semele striulata, Semele subovata, Semele taracodes, Semele tita, Semele zebuensis
Synonymy list
| Year | Name and author |
|---|---|
| 2000 | Semele (Amphidesma) Coan et al. p. 434 |
| 2002 | Amphidesma Sepkoski |
| 2010 | Amphidesma Bouchet et al. |
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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. Semele (Amphidesma)
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†Amphidesma brevirostrum Hupé 1854
†Amphidesma mississippiensis Conrad 1848
†Amphidesma profunda Conrad 1893
Semele (Amphidesma) venusta Reeve 1853 [sharp-rib semele]
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Invalid names: Semele incongrua Carpenter 1864 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, c = class | |||||
| References: Sanchez Roig 1926, Aberhan et al. 2004 | |||||
Age range
Maximum range based only on fossils: base of the Bartonian to the top of the Late/Upper Pleistocene or 41.03000 to 0.01170 Ma
Minimum age of oldest fossil (stem group age): 37.71 Ma
Minimum age of oldest fossil (stem group age): 37.71 Ma
Collections (15 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Bartonian | USA (Alabama) | Semele profunda (90600 205489) | |
| Rupelian | USA (Mississippi) | Amphidesma mississippiensis (84137) | |
| Chattian | Panama | Semele venusta (42558) | |
| Middle Pleistocene | USA (California) | Semele incongrua (138723 202493 202636 202637 202647 203108 223327) | |
| Late/Upper Pleistocene | USA (California) | Semele incongrua (226458) Semele venusta (96930 96936 96939) |