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Taxonomy
Mactra (Mactra) orthomorpha was named by Grant and Gale (1931). Its type specimen is SDNM 193, a shell, and it is a 3D body fossil.
It was recombined as Pseudocardium orthomorpha by Moore (2003).
It was recombined as Pseudocardium orthomorpha by Moore (2003).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1931 | Mactra (Mactra) orthomorpha Grant and Gale p. 391 figs. pl. 23, figs. 2a-c, 6, 7 |
| 2003 | Pseudocardium orthomorpha Moore |
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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.
†Pseudocardium orthomorpha Grant and Gale 1931
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| Grant and Gale 1931 | Shell ovate-subtrigonal, moderately ventricose, of moderate thickness; umbones rather full, coming to a blunt point at the dorsal margins of the valves; surface of valves marked with fine, low, irregular growth lines and a low angulation running from the umbo to the posterior ventral margin; hinge normal, chondrophore prominent, wide, overhung by a spur, lateral laminae rather long, well-developed, in the right valve a second set attached to the dorsal margin of the valve. Length, about 39 mm.; height, about 32 mm.; convexity of one valve, about 12 mm. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Sanchez Roig 1926, Aberhan et al. 2004 | |||||
Collections
No collection or age range data are available