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Glycymeris pentzana

Bivalvia - Arcida - Glycymerididae

Synonymy list
YearName and author
1958Glycymeris pentzana Anderson p. 98 figs. Plate 74, figures 2, 2a

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
Eubivalvia
RankNameAuthor
subclassAutobranchia(Groblen 1894)
infraclassPteriomorphia(Beurlen 1944)
OstreomorphiFerussac 1822
ArcioniGray 1854
orderArcida(Stoliczka 1871)
superfamilyArcoidea(Lamarck 1809)
familyGlycymerididaeNewton 1922
genusGlycymerisDa Costa 1778
speciespentzana

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.

Diagnosis
ReferenceDiagnosis
F. M. Anderson 1958Shell of medium size, a little inflated, subcircular in outline, nearly equilateral, with low beaks, scarcely rising above margin of valves; shell of moderate thickness; surface marked by concentric growth lines and by slight undulations, crossed by numerous (30-35) rather fine radial ribs extending from beak to basal margin of shell; hinge plate of holotype only partly exposed, but set with radially arranged cardinal teeth, 10 or more on either side of the median line, curving outward and downward at ends of hinge plate ; inner margin of the shell smooth at the front and rear, denticulate only at the base of the shell opposite the beak, for about 10 mm.