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Taxonomy
Willimactra (Petromactra) was named by Saul (1973).
It was reranked as Petromactra by Sepkoski (2002).
It was assigned to Willimactra by Saul (1973), Saul (1973); and to Veneroida by Sepkoski (2002).
It was reranked as Petromactra by Sepkoski (2002).
It was assigned to Willimactra by Saul (1973), Saul (1973); and to Veneroida by Sepkoski (2002).
Subtaxa
Species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1973 | Willimactra (Petromactra) Saul p. 22 |
| 2002 | Petromactra Sepkoski |
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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. †Willimactra (Petromactra) Saul 1973
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†Willimactra (Petromactra) mathewsonii Gabb 1864
†Willimactra (Petromactra) truncata Gabb 1864
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Invalid names: Spisula chicoensis Packard 1916 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Aberhan et al. 2004, Sanchez Roig 1926 | |||||
Age range: base of the Late/Upper Campanian to the top of the Maastrichtian or 83.60000 to 66.00000 Ma
Collections (10 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Campanian | USA (California) | Willimactra truncata (86789) | |
| Early/Lower Campanian | USA (California) | Lutraria truncata (239772) Willimactra truncata (86790) | |
| Late/Upper Campanian | USA (California) | Tellina mathewsonii (1516 1519 1548) | |
| Middle Campanian | USA (California) | Willimactra truncata (144770) | |
| Early/Lower Maastrichtian | USA (California) | Tellina mathewsonii (1545) | |
| Maastrichtian | USA (South Dakota) | Petromactra sp. (1320) | |
| Maastrichtian | Mexico | Petromactra matthewsoni (1372) |