| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Venus (Mercenaria) varians was named by Gabb (1864). Its type specimen is ANSP 4383 (lectotype) and is a 3D body fossil.
It was recombined as Chione varians by Waring (1917); it was recombined as Aphrodina varians by Stewart (1930) and Hoots (1931); it was recombined as Calva varians by Popenoe (1937); it was recombined as Trigonocallista varians by Taff et al. (1940); it was recombined as Calva (Calva) varians by Saul and Popenoe (1992).
It was recombined as Chione varians by Waring (1917); it was recombined as Aphrodina varians by Stewart (1930) and Hoots (1931); it was recombined as Calva varians by Popenoe (1937); it was recombined as Trigonocallista varians by Taff et al. (1940); it was recombined as Calva (Calva) varians by Saul and Popenoe (1992).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1864 | Venus (Mercenaria) varians Gabb p. 161 figs. PL 23, Fig. 140, 140 a, and 141 |
| 1917 | Chione varians Waring p. 56 |
| 1930 | Aphrodina varians Stewart pp. 249 - 250 figs. Plate 6, fig. 6 |
| 1931 | Aphrodina varians Hoots p. 91 |
| 1937 | Calva varians Popenoe p. 395 |
| 1940 | Trigonocallista varians Taff et al. p. 1321 figs. Plate 2, figures 10, 11 |
| 1992 | Calva (Calva) varians Saul and Popenoe pp. 19 - 24 figs. Figures 67-89 |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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 (Calva) varians Gabb 1864
show all | hide all
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. R. Saul and W. P. Popenoe 1992 | A Calva with nearly straight lunular margin, smooth lateral teeth, and cardinal tooth 1 longer than and approaching closer to the
beak than 3a. |