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Spondylus rugosus

Bivalvia - Pectinida - Spondylidae

Taxonomy
Spondylus rugosus was named by Packard (1922). Its type specimen is UCMP 12277, a shell, and it is a 3D body fossil.

Synonymy list
YearName and author
1922Spondylus rugosus Packard p. 422 figs. Plate 30, figure 3; plate 26, figure 3; and plate 29, figure 3
1990Spondylus rugosus Squires and Demetrion p. 385

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
classBivalvia
Eubivalvia
subclassAutobranchia(Groblen 1894)
infraclassPteriomorphia(Beurlen 1944)
RankNameAuthor
OstreomorphiFerussac 1822
OstreioniFerussac 1822
OstreataFerussac 1822
superorderOstreiformiiFerussac 1822
orderPectinida(Gray 1854)
suborderPectinidina(Adams and Adams 1858)
superfamilyPectinoideaRafinesque 1815
PectinoidaeRafinesque 1815
familySpondylidaeGray 1826
genusSpondylusLinnaeus 1758
speciesrugosus

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
E. L. Packard 1922Shell medium size, very inequilateral, inequivalve; right valve rather flat; left valve ventricose and very rugose. Outline of left valve irregular due to its nodose character. Umbone of left valve very tumid and irregular; umbone of right valve small. Ear long, equaling about one-third the height of the shell. Left valve ornamented by rough growth lines which are in places extended into irregular, lamellar processes, giving a very rough aspect to that valve. Right valve ornamented by numerous fine radiating ribs with imbricated spaces and interspaces . Hinge and pallial line unknown. Ventral margin finely crenulated. Length of type, 72 mm.; height, 95 mm.; diameter, about 40 mm.