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Gryphaea distorta

Bivalvia - Ostreida - Gryphaeidae

Synonymy list
YearName and author
1958Gryphaea distorta Anderson p. 107 figs. Plate 2, figures 3, 3a, 4, 4a

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Protostomia
—Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
—Eubivalvia
subclassAutobranchia(Groblen 1894)
infraclassPteriomorphia(Beurlen 1944)
RankNameAuthor
—OstreomorphiFerussac 1822
—OstreioniFerussac 1822
—OstreataFerussac 1822
superorderOstreiformiiFerussac 1822
orderOstreida(Fërussac 1822)
suborderOstreidina(Ferussac 1822)
superfamilyOstreoidea(Rafinesque 1815)
familyGryphaeidaeVialov 1936
subfamilyGryphaeinaeVialov 1936
genusGryphaeaLamarck 1801
speciesdistorta

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.

†Gryphaea distorta Anderson 1958
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Diagnosis
ReferenceDiagnosis
F. M. Anderson 1958Shell small, or of moderate size, subtriangular in outline, otherwise somewhat irregular in shape, umbones a little bent ; anterior and posterior borders of the shell expanded ; beak nearly terminal, and spiral, small ; lower valve deep and rather broad, central depression ex­ tending from beak to basal border of the valve, which is marked by a slight sinus; upper part of umbone narrow but rounded; shell not squamose, smooth and nacreous, ornamented with concentric lines of growth.