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Taxonomy
Chionista was named by Keen (1958) [Sepkoski's age data: Q Plei R]. It is extant.
It was reranked as Chione (Chionista) by Coan et al. (2000), Roopnarine (2001).
It was assigned to Chione by Coan et al. (2000), Roopnarine (2001); to Veneridae by Todd (2001); to Veneroida by Sepkoski (2002); and to Venerinae by Coan and Valentich-Scott (2012).
It was reranked as Chione (Chionista) by Coan et al. (2000), Roopnarine (2001).
It was assigned to Chione by Coan et al. (2000), Roopnarine (2001); to Veneridae by Todd (2001); to Veneroida by Sepkoski (2002); and to Venerinae by Coan and Valentich-Scott (2012).
Synonymy list
| Year | Name and author |
|---|---|
| 1958 | Chionista Keen |
| 2000 | Chione (Chionista) Coan et al. p. 369 |
| 2001 | Chione (Chionista) Roopnarine p. 645 |
| 2001 | Chionista Todd |
| 2002 | Chionista Sepkoski |
| 2012 | Chionista Coan and Valentich-Scott p. 762 |
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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. Chionista Keen 1958
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Chionista fluctifraga Sowerby II 1853 [smooth chione]
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Invalid names: Chione cortezi Carpenter 1864 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, f = family, c = class | |||||
| References: Hendy et al. 2009, Aberhan et al. 2004, Kiessling 2004 | |||||
Age range
Maximum range based only on fossils: base of the Tortonian to the top of the Late/Upper Pleistocene or 11.63000 to 0.01170 Ma
Minimum age of oldest fossil (stem group age): 7.246 Ma
Minimum age of oldest fossil (stem group age): 7.246 Ma
Collections (13 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Tortonian | Panama (Darien) | C. sp. (136122) | |
| Late/Upper Pleistocene | USA (California) | Chione cortezi (96589 96935 96936 96939 160361) Protothaca fluctifraga (240639) Venus fluctifraga (59063 96895 222660) | |
| Late/Upper Pleistocene | Mexico (Sonora) | Chione cortezi (34937 34939) Chione fluctifraga (44963) |