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Taxonomy
Cardium brewerii was named by Gabb (1864). It is not extant.
It was recombined as Plagiocardium (Schedocardia) brewerii by Stewart (1930) and Turner (1938); it was recombined as Loxocardium (Schedocardia) brewerii by Weaver (1942); it was recombined as Acanthocardia brewerii by Givens and Kennedy (1979); it was recombined as Acanthocardia (Schedocardia) brewerii by Squires (1984), Squires (1987) and Moore (2003); it was recombined as Schedocardia breweri by Nilsen (1987); it was recombined as Schedocardia brewerii by Hendy (2020).
It was recombined as Plagiocardium (Schedocardia) brewerii by Stewart (1930) and Turner (1938); it was recombined as Loxocardium (Schedocardia) brewerii by Weaver (1942); it was recombined as Acanthocardia brewerii by Givens and Kennedy (1979); it was recombined as Acanthocardia (Schedocardia) brewerii by Squires (1984), Squires (1987) and Moore (2003); it was recombined as Schedocardia breweri by Nilsen (1987); it was recombined as Schedocardia brewerii by Hendy (2020).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1864 | Cardium brewerii Gabb p. 173 figs. pl. 24, fig. 155 |
| 1917 | Cardium brewerii Waring p. 92 figs. Pl. 14, Fig. 9 |
| 1922 | Arca columbiana Weaver and Palmer p. 8 figs. pl. 8, fig. 1 |
| 1922 | Cardium oldroydi Weaver and Palmer p. 20 figs. pl. 8, figs. 3, 11 |
| 1930 | Plagiocardium (Schedocardia) brewerii Stewart pp. 256 - 257 figs. Plate 12, fig. 6 |
| 1938 | Plagiocardium (Schedocardia) brewerii Turner p. 52 |
| 1942 | Loxocardium (Schedocardia) brewerii oldroydi Weaver |
| 1942 | Loxocardium (Schedocardia) brewerii Weaver p. 153 |
| 1979 | Acanthocardia brewerii Givens and Kennedy |
| 1984 | Acanthocardia (Schedocardia) brewerii Squires p. 49 figs. Figures 12a-b |
| 1987 | Schedocardia breweri Nilsen |
| 1987 | Acanthocardia (Schedocardia) brewerii Squires p. 65 fig. 112 |
| 2003 | Acanthocardia (Schedocardia) brewerii Moore |
| 2020 | Schedocardia brewerii 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.
†Schedocardia brewerii Gabb 1864
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Invalid names: Arca columbiana Weaver and Palmer 1922 [synonym], Cardium oldroydi Weaver and Palmer 1922 [synonym]
†Acanthocardia (Schedocardia) brewerii hartleyensis Clark and Woodford 1927
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. E. Weaver and K. Palmer 1922 (Arca columbiana) | Shell large and rectangular in outline ; nearly equilateral ; beaks
prominent, umbonal area broad ; hinge line straight ; cardinal area narrow ; dorsal line sloping slightly from the beaks ; anterior end rounded, passing into the ventral margin with a curve ; ventral margin only slightly curved, extending abruptly into the posterior end ; posterior end straight ; posterior end is more flaring and concave than the anterior end ; there is a tendency for a slight umbonal ridge to extend from the beaks to the posterior ventral margin ; shell ornamented with 22 flat-topped, wide, very prominent radiating ribs with interspaces nearly equal to the width of the ribs. |