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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Oxyperas was named by Mörch (1853) [Sepkoski's age data: T Mi-m R]. It is extant.
It was reranked as Spisula (Oxyperas) by Olsson (1928).
It was assigned to Spisula by Olsson (1928); to Mactridae by Olsson (1931); to Veneroida by Sepkoski (2002); and to Mactrinae by Maxwell (1978), Beu (2006).
It was reranked as Spisula (Oxyperas) by Olsson (1928).
It was assigned to Spisula by Olsson (1928); to Mactridae by Olsson (1931); to Veneroida by Sepkoski (2002); and to Mactrinae by Maxwell (1978), Beu (2006).
Species lacking formal opinion data
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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.
G. Oxyperas Mörch 1853
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†Oxyperas callistoides Olsson 1928
†Oxyperas deserta Olsson 1928
†Oxyperas parinensis Olsson 1928
†Oxyperas steinmanni Olsson 1931
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Sanchez Roig 1926, Aberhan et al. 2004 | |||||
Age range
Maximum range based only on fossils: base of the Ypresian to the top of the Early/Lower Pliocene or 56.00000 to 3.60000 Ma
Minimum age of oldest fossil (stem group age): 48.07 Ma
Minimum age of oldest fossil (stem group age): 48.07 Ma
Collections (20 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Ypresian | Antarctica (Seymour Island) | O. ortmanni (63549) | |
| Ypresian - Lutetian | Antarctica | O. ortmanni (72405) | |
| Ypresian - Lutetian | Antarctica (Seymour Island) | O. ortmanni (63551) | |
| Lutetian | New Zealand (Canterbury) | Longimactra flemingi (50147) Longimactra sp. (50161) | |
| Bartonian | Antarctica (Seymour Island) | O. ortmanni (63552) | |
| Bartonian | Peru (Piura) | Spisula deserta (52526 52536) Spisula parinensis (88365) | |
| Late/Upper Eocene | Antarctica | O. ortmanni (72397) | |
| Late/Upper Eocene | Peru (Piura) | Spisula callistoides (52523) Spisula callistoides, Spisula deserta (88367) | |
| Early/Lower Oligocene | Peru (Piura) | Spisula steinmanni (55433 55441) | |
| Waitakian | New Zealand (South Island) | O. exensis (205324) | |
| Middle Miocene | Russian Federation (Sakhalinskaya) | O. sp. (61932) | |
| Late/Upper Miocene | Japan | O. bernardi (71049) Spisula sp. (52117 52118) | |
| Early/Lower Pliocene | Japan | O. bernardi (97031) |