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Taxonomy
Chama arcana was named by Bernard (1976). It is extant.
It was recombined as Chama (Chama) arcana by Moore (1988).
It was recombined as Chama (Chama) arcana by Moore (1988).
Sister species lacking formal opinion data
C. agronomica, C. ancestralis, C. benoisti, C. boriesi, C. brauni, C. brimonti, C. buchivacoana, C. caimitica, C. callosa, C. caloosana, C. ciplyensis, C. clacarata, C. coquandi, C. corbierei, C. corbieri, C. corticosa, C. cossmanni, C. crenulata, C. dahanaensis, C. dissimilis, C. distans, C. dunkeri, C. engonia, C. eudeiela, C. gainesensis, C. gamella, C. gardnerae, C. gigas, C. granulosa, C. gryphina, C. gryphoides, C. harrisi, C. heilprini, C. hillsboroughensis, C. latecostata, C. lobata, C. minima, C. monstrosa, C. niasensis, C. ovalis, C. pannicularia, C. papyracea, C. paraensis, C. pellati, C. placentina, C. praetexta, C. punctata, C. richardsi, C. riocanica, C. saharica, C. sarda, C. selseyensis, C. semipurpurata, C. sinuosa, C. species, C. spinosa, C. squamosa, C. subgigas, C. subsquamosa, C. tampaensis, C. tartareui, C. taylorensis, C. thalassopora, C. toeroeki, C. turgida, C. turgidula, C. umbgrovei, C. weinheimensis, C. willcoxii, C. capanemensis, C. concinnatus, C. coopericellus, C. daidela, C. plinthota, C. subgigas, C. callimorpha, C. indossolubilis, C. thalera, C. penthesileae, C. griphoides
Synonymy list
| Year | Name and author |
|---|---|
| 1976 | Chama arcana Bernard |
| 1988 | Chama (Chama) arcana Moore p. D30 figs. Plate 10, figures 6, 8-10; Plate 11, figures 10, 14, 17-19 |
| 2000 | Chama arcana Coan et al. p. 309 |
| 2005 | Chama arcana Powell II et al. p. 186 |
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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.
Chama arcana Bernard 1976 [clear jewel box]
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, c = class | |||||
| Reference: Aberhan et al. 2004 | |||||
Age range: base of the Late/Upper Pliocene to the top of the Late/Upper Pleistocene or 3.60000 to 0.01170 Ma
Collections (42 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Pliocene | USA (California) | Chama pellucida (194664) | |
| Zanclean - Gelasian | USA (California) | Chama arcana (214262 214273) | |
| Blancan | USA (California) | Chama pellucida (19676 19678) | |
| Late/Upper Pliocene | USA (California) | Chama pellucida (200398 200403) | |
| Piacenzian | USA (California) | Chama pellucida (186031) | |
| Gelasian | USA (California) | Chama pellucida (189765 189769) | |
| Early/Lower Pleistocene | USA (California) | Chama pellucida (202496) | |
| Pleistocene | Mexico (Baja California) | Chama pellucida (96590 96592 96593) | |
| Quaternary | USA (California) | Chama pellucida (37938 37941 37947 37948) | |
| Middle Pleistocene | USA (California) | Chama pellucida (202492 202493 202494 203114 222663 222665 222978 222979) | |
| Late/Upper Pleistocene | USA (California) | Chama arcana (96930 96936 96938 96939) Chama pellucida (59063 96566 96895 160361 219030 222659 222660 222661 222662) | |
| Late/Upper Pleistocene | Mexico (Baja California) | Chama pellucida (96591) | |
| Late/Upper Pleistocene | Mexico | Chama pellucida (67613) | |
| Late/Upper Pleistocene | Mexico (Baja California Sur) | Chama pellucida (89597) |