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Taxonomy
Chama exogyra was named by Conrad (1837). It is extant.
It was recombined as Chama (Pseudochama) exogyra by Willett (1946); it was recombined as Pseudochama (Pseudochama) exogyra by Moore (1988); it was recombined as Pseudochama exogyra by Coan et al. (2000).
It was recombined as Chama (Pseudochama) exogyra by Willett (1946); it was recombined as Pseudochama (Pseudochama) exogyra by Moore (1988); it was recombined as Pseudochama exogyra by Coan et al. (2000).
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 |
|---|---|
| 1837 | Chama exogyra Conrad p. 256 |
| 1903 | Chama exogyra Arnold p. 130 |
| 1946 | Chama (Pseudochama) exogyra Willett p. 30 |
| 1988 | Pseudochama (Pseudochama) exogyra Moore p. D32 figs. Plate 9, figures 11, 13, 14; plate 10, figures 2, 4; plate 11, figure 5 |
| 2000 | Pseudochama exogyra Coan et al. p. 310 |
| 2021 | Chama exogyra Hendy |
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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 exogyra Conrad 1837 [California reversed chama]
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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 (41 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Pliocene | USA (California) | Pseudochama exogyra (200398 200403 238437 238607) | |
| Piacenzian | USA (California) | Chama exogyra (186031) | |
| Early/Lower Pleistocene | USA (California) | Pseudochama exogyra (223033) | |
| Early/Lower Pleistocene - Late/Upper Pleistocene | USA (California) | Pseudochama exogyra (223075) | |
| Pleistocene | USA (California) | Pseudochama exogyra (237610 240573 240574 240577) | |
| Pleistocene | Mexico (Sonora) | Pseudochama exogyra (96565) | |
| Pleistocene | Mexico (Baja California) | Pseudochama exogyra (96590 96592 96593) | |
| Middle Pleistocene | USA (California) | Pseudochama exogyra (202634 202636 202638 202639 202648 203108 203113 203114) | |
| Middle Pleistocene - Late/Upper Pleistocene | USA (California) | Chama exogyra (222646) | |
| Late/Upper Pleistocene | Mexico (Baja California Sur) | Pseudochama exogyra (89597) | |
| Late/Upper Pleistocene | Mexico (Baja California) | Pseudochama exogyra (96591) | |
| Late/Upper Pleistocene | USA (California) | Chama exogyra (222660 222661) Pseudochama exogyra (96566 96895 96937 96939 160361 240594 240595 240600 240603 240650 240652 240653 240655) |