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Nuculana (Saccella) soriensis

Bivalvia - Nuculanida - Nuculanidae

Synonymy list
YearName and author
1951Nuculana (Saccella) soriensis Eames p. 327 figs. pl. 9, figs. 15a, b

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
Eubivalvia
RankNameAuthor
subclassProtobranchia(Pelseneer 1889)
superorderNuculaniformiiCarter et al. 2000
orderNuculanida(Carter et al. 2000)
superfamilyNuculanoideaAdams and Adams 1858
familyNuculanidaeAdams and Adams 1858
genusNuculanaWoodring 1925
subgenusSaccella
speciessoriensis

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.

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Diagnosis
ReferenceDiagnosis
F. E. Eames 1951Shell suboval, not elongate, with a short rostrum posteriorly, moderately
inflated. Umbos small, pointed, not prominent, submedian. Antero-dorsal margin only
moderately long, almost straight, only gently descendent. Anterior end rounded. Ventral
margin strongly convex, only young specimens showing a slight emargination posteriorly.
Posterior end with a short, pointed rostrum which is situated high up. Postero-dorsal
margin straight, moderately long, only gently descendent. Ornament consisting of fine,
sharp concentric threads which are about half the width of their intervals on the holotype
and on the majority of the topotypes; there are about 10 in 2 mm. on the ventral portion
of the holotype. On some of the topotypes the threads appear relatively broader, but this
is probably due to wear. Lunule indistinct. Escutcheon long and narrow, limited externally
by a fine, sharp carina which runs from the umbo to the tip of the rostrum; this carina
keeps close to the postero-dorsal margin, and the concentric ornament apparently does not pass over it. Normal type of taxodont teeth can be seen on the holotype and four of the topotypes. Siphonal region very vaguely depressed.