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Taxonomy
Mactra solidissima was named by Dilwyn (1817) [DISTRIBUTION: Pleistocene-Recent; Maine-Gulf of Mexico. TYPE: Holotype missing.]. It is extant.
It was recombined as Spisula solidissima by Abbott (1954), Richards (1962), Castagna and Chanley (1973), Spencer and Campbell (1987); it was recombined as Hemimactra solidissima by Hendy et al. (2008); it was recombined as Spisula (Hemimactra) solidissima by Dall (1898), Signorelli (2019).
It was recombined as Spisula solidissima by Abbott (1954), Richards (1962), Castagna and Chanley (1973), Spencer and Campbell (1987); it was recombined as Hemimactra solidissima by Hendy et al. (2008); it was recombined as Spisula (Hemimactra) solidissima by Dall (1898), Signorelli (2019).
Sister species lacking formal opinion data
Hemimactra craspeota, Hemimactra duplinensis, Hemimactra modicella, Hemimactra solidissina, Hemimactra solidssima, Mactra asperaeformis, Mactra polynyma, Mactra snatolensis, Mactra xenophonti, S. addicotti, S. albaria, S. albaria, S. albirupina, S. amekiensis, S. bisculpurtata, S. californica, S. catiliformis, S. chulgunensis, S. coosensis, S. cutirostrata, S. eugenense, S. funerata, S. hanniballi, S. inaequilateralis, S. incrassata, S. merriami, S. mississippiensis, S. modicella, S. ochotensis, S. onnechiuria, S. ovalis, S. packardi, S. rushi, S. solida, S. subtruncata, S. tigilensis, S. trangulata, S. triangulata, S. aequilatera, S. aequilaterala, S. densa, S. dodona, S. modicella, S. modicella, S. grayana, S. matleyi, S. onnechiuria, S. densata, S. evalensis, S. ezodensata, S. ikusaensis, S. panzana, S. sachalinensis, S. hauitaca, S. inaequilatera, S. subtruncata, S. couttsi
Entered
by A. Hendy on 2007-02-15
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1817 | Mactra procera Dillwyn p. 140 |
| 1817 | Mactra solidissima Dilwyn p. 140 |
| 1818 | Mactra gigantea Lamarck p. 472 |
| 1822 | Mactra similis Say |
| 1860 | Mactra similis Holmes p. 39 |
| 1874 | Spisula solidissima acadica Matthew p. 42 |
| 1898 | Spisula (Hemimactra) solidissima Dall p. 878 |
| 1937 | Spisula solidissima peninsulae Smith pp. 65-66 |
| 1954 | Spisula solidissima Abbott p. 446 |
| 1962 | Spisula similis DuBar |
| 1962 | Spisula solidissima Richards p. 69 |
| 1973 | Spisula solidissima Castagna and Chanley pp. 80-81 |
| 1987 | Spisula solidissima Spencer and Campbell |
| 2008 | Hemimactra solidissima Hendy et al. |
| 2019 | Spisula (Hemimactra) solidissima Signorelli p. 53 figs. 3.5a-d |
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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.
Spisula (Hemimactra) solidissima Dilwyn 1817
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Invalid names: Mactra gigantea Lamarck 1818 [synonym], Mactra procera Dillwyn 1817 [synonym], Mactra similis Say 1822 [synonym], Spisula solidissima acadica Matthew 1874 [invalid subgroup], Spisula solidissima peninsulae Smith 1937 [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 Zanclean to the top of the Holocene or 5.33300 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 3.6 Ma
Minimum age of oldest fossil (stem group age): 3.6 Ma
Collections (49 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Zanclean | USA (South Carolina) | Spisula similis (60940) | |
| Late/Upper Pliocene | USA (North Carolina) | Hemimactra solidissima (69018) Spisula similis (58895 59309 59310) | |
| Late/Upper Pliocene | USA (Virginia) | Hemimactra solidissima (80036) | |
| Gelasian | USA (North Carolina) | Spisula similis (71138) | |
| Early/Lower Pleistocene | USA (South Carolina) | Spisula similis (60944) | |
| Early/Lower Pleistocene | USA (North Carolina) | Hemimactra solidissima (80034) Spisula similis (58897 59315) Spisula solidissima (80033 80035) | |
| Pleistocene | USA (New York) | Spisula solidissima (66379 66381) | |
| Pleistocene | USA (Virginia) | Mactra solidissima (7108) | |
| Pleistocene | USA (South Carolina) | Mactra similis (203376) | |
| Pleistocene | USA (New Jersey) | Spisula solidissima (66601 66604 66611 66612 66614 66616 66617 66620 66621) | |
| Pleistocene | USA (Delaware) | Spisula solidissima (66703) | |
| Late/Upper Pleistocene | USA (North Carolina) | Hemimactra solidissima (69047) Spisula solidissima (66742 66744 66747 69045) | |
| Late/Upper Pleistocene | USA (Massachusetts) | Spisula solidissima (61269) | |
| Late/Upper Pleistocene | USA (Maine) | Spisula solidissima (66355) | |
| Late/Upper Pleistocene | USA (South Carolina) | Mactra similis (92406) Spisula similis (69046) Spisula solidissima (60923 60927 60928 60930 66755 66756) | |
| Late/Upper Pleistocene | USA (Maryland) | Spisula solidissima (66721) | |
| Late/Upper Pleistocene | USA (Virginia) | Spisula solidissima (57705 57706 57707 69048) | |
| Late/Upper Pleistocene | USA (Florida) | Spisula solidissima (34269) | |
| Holocene | USA (Louisiana) | Spisula solidissima (92776) |