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Taxonomy
Chione (Ameghinomya) was named by Ihering (1907) [Sepkoski's age data: T Dani T Mi-m Sepkoski's reference number: 914].
It was synonymized subjectively with Leukoma by Coan and Valentich-Scott (2012); it was reranked as Ameghinomya by Gordillo (1991), Sepkoski (2002), Griffin and Nielsen (2008) and Pérez et al. (2013).
It was assigned to Chione by Ihering (1907); to Veneroida by Sepkoski (2002); to Veneridae by Gordillo (1991) and Griffin and Nielsen (2008); and to Chioninae by Pérez et al. (2013).
It was synonymized subjectively with Leukoma by Coan and Valentich-Scott (2012); it was reranked as Ameghinomya by Gordillo (1991), Sepkoski (2002), Griffin and Nielsen (2008) and Pérez et al. (2013).
It was assigned to Chione by Ihering (1907); to Veneroida by Sepkoski (2002); to Veneridae by Gordillo (1991) and Griffin and Nielsen (2008); and to Chioninae by Pérez et al. (2013).
Synonymy list
| Year | Name and author |
|---|---|
| 1907 | Chione (Ameghinomya) Ihering p. 306 |
| 1991 | Ameghinomya Gordillo p. 129 |
| 2002 | Ameghinomya Sepkoski |
| 2008 | Ameghinomya Griffin and Nielsen |
| 2013 | Ameghinomya Pérez et al. p. 364 |
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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. †Ameghinomya Ihering 1907
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†Ameghinomya camachoi Pérez et al. 2013
†Ameghinomya chiloensis Philippi 1887
†Ameghinomya coquandi Hupé 1854
†Ameghinomya meridionalis Sowerby 1846
†Ameghinomya meridonalis Sowerby 1846
†Ameghinomya volckmanni Philippi 1887
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Invalid names: Chione volckmanni Philippi 1887 [replaced]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. Pérez et al. 2013 | Orbicular to subquadrate shell with medium to large size. Posterior margin frequently truncated. Lunule well developed, wide and short. Right valve with posterior tooth simmetrically grooved, and middle tooth asimmetrically grooved. Left valve with middle tooth grooved, posterior tooth wide and long and separated from nymph. Pallial sinus triangular and directed upwards. Inner ventral margin wiht fine crenulations limited by a comarginal groove. External sculpture given by comarginal lines and low lamellae, perpendicular to valve surface. Radial sculpture fine (modified from del Río, 1991). |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Aberhan et al. 2004, Kiessling 2004 | |||||
Age range
Maximum range based only on fossils: base of the Burdigalian to the top of the Holocene or 20.44000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 15.97 Ma
Minimum age of oldest fossil (stem group age): 15.97 Ma
Collections (78 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Eocene - Miocene | Argentina (Santa Cruz) | Venus volckmanni (50077) | |
| Late/Upper Oligocene - Early/Lower Miocene | Argentina (Santa Cruz) | A. argentina, A. darwini, A. meridionalis (48068) | |
| Early/Lower Miocene | Argentina (Chubut) | A. argentina (211699) A. darwini (211700) | |
| Early/Lower Miocene | Argentina | A. argentina (71429 71539) A. argentina, A. darwini (71427) A. argentina, A. meridionalis (71542) A. darwini (71404) A. meridionalis (71540 71543) A. meridonalis, A. argentina (71428) A. sp. (185967) | |
| Early/Lower Miocene | Chile | A. volckmanni (78526) Chione darwini (78425) Chione volckmanni (78522 78552 79035 79036) | |
| Early/Lower Miocene | Argentina (Santa Cruz) | A. argentina, A. meridionalis (211698) A. meridionalis (211696) | |
| Early/Lower Miocene - Middle Miocene | Argentina (Tierra del Fuego) | A. camachoi (211695) | |
| Early/Lower Miocene - Middle Miocene | Argentina (Río Negro) | A. argentina (211706) | |
| Burdigalian | Chile (Bio-Bio) | A. volckmanni (46979) | |
| Burdigalian | Chile | A. volckmanni (179976) Chione volckmanni, A. volckmanni (78525) | |
| Burdigalian | Argentina (Río Negro) | Tawera canalei (179578) | |
| Langhian | Argentina (Río Negro) | Tawera canalei (179580) | |
| Middle Miocene | Argentina (Chubut) | A. argentina (211701) | |
| Middle Miocene | Argentina | A. argentina (71425) | |
| Middle Miocene - Late/Upper Pliocene | Chile (Lagos) | A. meridionalis, A. chiloensis (100135) | |
| Late/Upper Miocene | Chile (Eleventh) | A. chiloensis (211714) | |
| Late/Upper Miocene | Argentina (Chubut) | A. argentina (211702 211704) A. meridionalis (211703 211705) | |
| Late/Upper Miocene | Chile (Sixth) | A. meridionalis, A. volckmanni (211708) A. volckmanni (211709 211710 211711) | |
| Late/Upper Miocene | Chile (Bio-Bio) | A. volckmanni (46978) | |
| Late/Upper Miocene | Argentina | A. argentina (71558 71563) A. argentina, A. meridionalis (71571 71572) A. meridionalis (71548 71564) | |
| Late/Upper Miocene | Chile (Eighth) | A. volckmanni (211712 211713) | |
| Late/Upper Miocene | Argentina (Entre Ríos) | A. argentina (211707) | |
| Pliocene | Chile (Coquimbo) | Protothaca antiqua (222347) | |
| Pleistocene | Chile (Coquimbo) | Venus antiqua (222333) | |
| Pleistocene | Chile (Copiapó) | Venus antiqua (222834 222838 222876) | |
| Pleistocene - Holocene | Chile (Coquimbo) | A. antiqua (222350) | |
| Quaternary | Chile (Copiapó) | Venus antiqua (223451) | |
| Ionian | Argentina | Protothaca antiqua (71611 71612) | |
| Middle Pleistocene | Argentina | Protothaca antiqua (71605 71606 71609) | |
| Late/Upper Pleistocene | Peru | A. antigua (76643) | |
| Late/Upper Pleistocene (interglacial) | Chile (Tarapaca) | Venus antiqua (96672) | |
| Late/Upper Pleistocene | Brazil | Chione pampeana (72128 72131 72135) | |
| Late/Upper Pleistocene | Argentina | Protothaca antiqua (71607 71608 71610) | |
| Holocene | Argentina | A. antiqua (65823) Protothaca antiqua (71602 71604 71676) | |
| Holocene | Brazil | Protothaca antiqua (72120 72121 72122 72123) |