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Pseudocardium orthomorpha

Bivalvia - Cardiida - Mactridae

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).

Sister species lacking formal opinion data

Synonymy list
YearName and author
1931Mactra (Mactra) orthomorpha Grant and Gale p. 391 figs. pl. 23, figs. 2a-c, 6, 7
2003Pseudocardium orthomorpha Moore

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
Eubivalvia
subclassAutobranchia(Groblen 1894)
infraclassHeteroconchia(Gray 1854)
CardiomorphiFerussac 1822
CardioniFerussac 1822
RankNameAuthor
CardiidiaFerussac 1822
CardiataFerussac 1822
superorderCardiiformiiFerussac 1822
orderCardiidaFerussac 1822
suborderCardiidinaFerussac 1822
Veneroidei(Gray 1854)
VeneroiteiGray 1854
superfamilyMactroidea(Lamarck 1809)
familyMactridaeLamarck 1809
subfamilyMactrinaeLamarck 1809
genusPseudocardium
speciesorthomorpha(Grant and Gale 1931)

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
ReferenceDiagnosis
Grant and Gale 1931Shell 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.