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Fissurella (Cremides)
Taxonomy
Cremides was named by Adams and Adams (1854) [Sepkoski's age data: T Ol-u R]. It is extant.
It was reranked as Fissurella (Cremides) by Knight et al. (1960), Weisbord (1962), Todd (2001), Landau et al. (2016).
It was assigned to Archaeogastropoda by Sepkoski (2002); and to Fissurella by Knight et al. (1960), Weisbord (1962), Todd (2001), Landau et al. (2016).
It was reranked as Fissurella (Cremides) by Knight et al. (1960), Weisbord (1962), Todd (2001), Landau et al. (2016).
It was assigned to Archaeogastropoda by Sepkoski (2002); and to Fissurella by Knight et al. (1960), Weisbord (1962), Todd (2001), Landau et al. (2016).
Species lacking formal opinion data
Fissurella alabama, Fissurella arguta, Fissurella costata, Fissurella costicillatissima, Fissurella cumingii, Fissurella glarea, Fissurella incarnata, Fissurella longipora, Fissurella macrotrema, Fissurella mediavia, Fissurella migeriensis, Fissurella mississippiensis, Fissurella mutabilis, Fissurella natalensis, Fissurella nubecua, Fissurella nubecula, Fissurella oriens, Fissurella picta, Fissurella radiosa, Fissurella reticulata, Fissurella robusta, Fissurella rugosa, Fissurella ruppellii, Fissurella virescens
Synonymy list
| Year | Name and author |
|---|---|
| 1854 | Cremides Adams and Adams |
| 1960 | Fissurella (Cremides) Knight et al. p. 230 |
| 1962 | Fissurella (Cremides) Weisbord p. 61 |
| 2001 | Fissurella (Cremides) Todd |
| 2002 | Cremides Sepkoski |
| 2016 | Fissurella (Cremides) Landau et al. p. 10 |
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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. Fissurella (Cremides) Adams and Adams 1854
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Fissurella (Cremides) angusta Gmelin 1789
Fissurella (Cremides) barbouri Farfante 1943
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, superf = superfamily, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Age range
Maximum range based only on fossils: base of the Early/Lower Pliocene to the top of the Late/Upper Pliocene or 5.33300 to 2.58000 Ma
Minimum age of oldest fossil (stem group age): 3.6 Ma
Minimum age of oldest fossil (stem group age): 3.6 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Pliocene | Venezuela (Sucre) | Fissurella longipora (41543) | |
| Late/Upper Pliocene | Venezuela | Fissurella angusta (131237) |