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Taxonomy
Cucullaea bowersiana was named by Cooper (1894). Its type specimen is CAS 66028.01 (lectotype) and is a 3D body fossil. It is the type species of Calva (Egelicalva).
It was recombined as Calva bowersiana by Popenoe (1937), Schoellhamer et al. (1981); it was recombined as Trigonocallista bowersiana by Popenoe (1942), Anderson (1958); it was recombined as Calva (Egelicalva) bowersiana by Saul and Popenoe (1992), Elder and Saul (1993).
It was recombined as Calva bowersiana by Popenoe (1937), Schoellhamer et al. (1981); it was recombined as Trigonocallista bowersiana by Popenoe (1942), Anderson (1958); it was recombined as Calva (Egelicalva) bowersiana by Saul and Popenoe (1992), Elder and Saul (1993).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1894 | Cucullaea bowersiana Cooper p. 48 figs. Pl. 5, Figs. 61 - 62 |
| 1902 | Cucullaea bowersiana Anderson p. 30 |
| 1922 | Meretrix nitida major Packard p. 425 figs. Plate 33, figure 2 |
| 1937 | Calva bowersiana Popenoe p. 396 |
| 1942 | Trigonocallista bowersiana Popenoe p. 396 |
| 1958 | Meretrix coronada Anderson p. 136 |
| 1958 | Trigonocallista major Anderson p. 138 figs. Plate 70, figures 2, 2a |
| 1958 | Trigonocallista bowersiana Anderson p. 140 figs. Plate 26, figure 8 |
| 1981 | Calva bowersiana Schoellhamer et al. p. D21 |
| 1992 | Calva (Egelicalva) bowersiana Saul and Popenoe pp. 39 - 44 figs. 211 - 238 |
| 1993 | Calva (Egelicalva) bowersiana Elder and Saul figs. Pl 1, figs 17,18 |
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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.
†Calva (Egelicalva) bowersiana Cooper 1894
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Invalid names: Meretrix coronada Anderson 1958 [synonym], Meretrix nitida major Packard 1922 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. R. Saul and W. P. Popenoe 1992 | A large, ovately trigonal Egelicalva having smooth lateral teeth and the lunular margin concave. Cardinal tooth 1 barely extending to hinge plare edge, extending farther toward beak than 3a, 3a shorter rhan 1, hinge plare relatively narrow. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Kiessling 2004, Aberhan et al. 2004 | |||||
Age range: base of the Early/Lower Campanian to the top of the Early/Lower Maastrichtian or 83.60000 to 66.00000 Ma
Collections (29 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Cretaceous | USA (California) | Chione varians (193034) | |
| Late/Upper Turonian - Late/Upper Campanian | USA (California) | Meretrix nitida (207833) | |
| Campanian | USA (California) | Calva bowersiana (168012) Trigonocallista major (215345) | |
| Campanian | USA (Washington) | Calva bowersiana (86868) | |
| Early/Lower Campanian | USA (California) | Trigonocallista bowersiana (44277) | |
| Late/Upper Campanian | USA (California) | Calva bowersiana (86872 219055) Calva bowersiana, Trigonocallista bowersiana (86794) Trigonocallista bowersiana (72057 86793 185168 214144 219077 220906 221105) | |
| Middle Campanian | USA (California) | Calva bowersiana (69314 86936 144763 144764 144772 144773) Meretrix sp. (207829) Trigonocallista bowersiana (185174 219079 220915 221106 221107) | |
| Early/Lower Maastrichtian | USA (California) | Calva bowersiana (215320) |