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Taxonomy
Mactra hemphillii was named by Dall (1894). It is extant.
It was recombined as Spisula hemphillii by Packard (1916); it was recombined as Spisula (Hemimactra) hemphilli by Dall (1921); it was recombined as Mactra (Spisula) hemphilli by Grant and IV and Gale (1931); it was recombined as Spisula hemphilli by Loel and Corey (1932), Woodring and Bramlette (1950) and Valentine (1965); it was corrected as Mactra hemphilli by Delong (1941); it was recombined as Spisula hemphili by Valentine (1957); it was recombined as Spisula (Mactromeris) hemphillii by Hertlein and Grant (1972); it was recombined as Mactromeris hemphilli by Powell et al. (2005); it was recombined as Mactromeris hemphillii by Coan et al. (2000), Moore (2003), Hendy (2021).
It was recombined as Spisula hemphillii by Packard (1916); it was recombined as Spisula (Hemimactra) hemphilli by Dall (1921); it was recombined as Mactra (Spisula) hemphilli by Grant and IV and Gale (1931); it was recombined as Spisula hemphilli by Loel and Corey (1932), Woodring and Bramlette (1950) and Valentine (1965); it was corrected as Mactra hemphilli by Delong (1941); it was recombined as Spisula hemphili by Valentine (1957); it was recombined as Spisula (Mactromeris) hemphillii by Hertlein and Grant (1972); it was recombined as Mactromeris hemphilli by Powell et al. (2005); it was recombined as Mactromeris hemphillii by Coan et al. (2000), Moore (2003), Hendy (2021).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1894 | Mactra hemphillii Dall p. 137 |
| 1916 | Spisula hemphillii Packard p. 287 figs. Plates 21 and 22 |
| 1921 | Spisula cameronis Dall p. 22 |
| 1921 | Spisula (Hemimactra) hemphilli Dall p. 52 |
| 1931 | Mactra (Spisula) hemphilli Grant, IV and Gale p. 398 |
| 1932 | Spisula hemphilli Loel and Corey p. 232 figs. Plate 45, figure 3 |
| 1941 | Mactra hemphilli Delong |
| 1950 | Spisula hemphilli Woodring and Bramlette |
| 1957 | Spisula hemphili Valentine |
| 1965 | Spisula hemphilli Valentine |
| 1972 | Spisula (Mactromeris) hemphillii Hertlein and Grant p. 315 figs. Plate 54, Figures 1-4, 9, Plate 57, Figure 16 |
| 2000 | Mactromeris hemphillii Coan et al. p. 454 |
| 2003 | Mactromeris hemphillii Moore figs. Plate 11, figures 4, 6 |
| 2005 | Mactromeris hemphilli Powell II et al. |
| 2021 | Mactromeris hemphillii Hendy |
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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.
Mactromeris hemphillii Dall 1894 [Hemphill's dish clam]
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Invalid names: Spisula cameronis Dall 1921 [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 Early/Lower Miocene to the top of the Late/Upper Pleistocene or 23.04000 to 0.01170 Ma
Collections (45 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Miocene | USA (California) | Spisula hemphilli (237913) | |
| Messinian | USA (California) | Spisula hemphilli (194895 195029 195031) | |
| Messinian - Zanclean | USA (California) | Spisula hemphilli (39335 39355) | |
| Early/Lower Pliocene | USA (California) | Spisula hemphilli (97404) | |
| Zanclean | Mexico (Baja California) | Spisula hemphilli (154115) | |
| Zanclean - Gelasian | USA (California) | Mactromeris hemphilli (214259 214270) | |
| Late/Upper Pliocene | USA (California) | Mactra hemphilli (200403) Madra hemphilli (200398) Spisula hemphilli (238435 238580) | |
| Piacenzian | USA (California) | Spisula hemphillii (122752) | |
| Gelasian | USA (California) | Mactromeris hemphilli (214278 214279 214280) Spisula hemphilli (189561 189760 189763 207646 207656 207657 207665 207667 207668 207671 207672 207692 207693 207700 207727 207762) | |
| Pleistocene | USA (California) | Spisula hemphilli (237610) | |
| Pleistocene | Mexico (Baja California) | Spisula hemphili (96592) | |
| Late/Upper Pleistocene | USA (California) | Mactra hemphilli (59063 96895 222660 240612 240621) Mactromeris hemphilli (96938) Spisula hemphilli (96566 160361 219030) |