| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Standella (Standella) was named by Gray (1853). It is extant. Its type is Mactra fragilis.
It was assigned to Standella by Gray (1853), Signorelli (2019).
It was assigned to Standella by Gray (1853), Signorelli (2019).
Subtaxa
Species lacking formal opinion data
Entered
by J. Marcot on 2026-04-20; modified by J. Marcot on 2026-04-20
Synonymy list
| Year | Name and author |
|---|---|
| 1853 | Standella (Standella) Gray |
| 2019 | Standella (Standella) Signorelli p. 57 |
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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. Standella (Standella) Gray 1853
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Standella (Standella) fragilis Gmelin 1792
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Invalid names: Lutraria candida Lamarck 1818 [synonym], Mactra anserina Guppy 1875 [synonym], Mactra bilineata Reeve 1854 [synonym], Mactra braziliana Lamarck 1818 [synonym], Mactra oblonga Philippi 1887 [synonym]
Standella (Standella) nasuta Gould 1851 [bent surfclam]
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Invalid names: Mactra deshayesii Conrad 1868 [synonym], Mactra hiantina Deshayes 1855 [synonym], Mactra revellei Durham 1950 [synonym], Mactrotoma revellei Durham 1950 [synonym]
Invalid names: Mactra fragilis gigas Nowell-Usticke 1969 [invalid subgroup]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, c = class | |||||
| References: Aberhan et al. 2004, Sanchez Roig 1926 | |||||
Age range
Maximum range based only on fossils: base of the Burdigalian to the top of the Holocene or 20.45000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 15.98 Ma
Minimum age of oldest fossil (stem group age): 15.98 Ma
Collections (15 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Miocene | Chile | Mactra oblonga (78552) | |
| Burdigalian | Chile | Mactra oblonga (78521) | |
| Early/Lower Pleistocene | USA (Florida) | Mactra fragilis (61309) | |
| Middle Pleistocene | USA (California) | Mactra nasuta (222995) | |
| Middle Pleistocene | USA (Florida) | Mactra fragilis (67069) | |
| Late/Upper Pleistocene | USA (Florida) | Mactrotoma fragilis (69034 69084 96538) | |
| Late/Upper Pleistocene | USA (California) | Mactra nasuta (96895 160361) | |
| Late/Upper Pleistocene (interglacial) | Jamaica | Mactra fragilis (80408) | |
| Late/Upper Pleistocene | USA (South Carolina) | Mactra fragilis (66760) | |
| Late/Upper Pleistocene | Mexico (Sonora) | Mactra nasuta (44963) | |
| Holocene | USA (Louisiana) | Mactra fragilis (41935 92776) |