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Sphaerium stewartensis
Taxonomy
Sphaerium stewartensis was named by Firby (1966). Its type specimen is UCMP 37869, a shell, and it is a 3D body fossil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1966 | Sphaerium stewartensis Firby p. 462 figs. 12, 15, 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.
†Sphaerium stewartensis Firby 1966
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. R. Firby 1966 | Shell ovoid; beaks almost central, slightly anterior; sculpture of closely spaced growth lines, more prominent dorsally than ventrally; right valve with single triangular arched cardinal tooth anterior to beak; two elongate anterior lateral teeth, two low elongate posterior lateral teeth; posterior lateral teeth one-third longer than anterior lateral teeth; left valve with small single pointed cardinal tooth, single prominent anterior lateral, single prominent pos- terior lateral; posterior margin flatter than anterior margin. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Bush and Bambach 2015, Aberhan et al. 2004 | |||||
Collections
No collection or age range data are available