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Modiolus (Modiolus) fountainensis

Bivalvia - Mytilida - Mytilidae

Synonymy list
YearName and author
1916Modiola fountainensis Weller pp. 251 - 252 figs. pl. 16 f. 19
2007Modiolus (Modiolus) fountainensis Hoare p. 71 figs. 3.12 – 3.23

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
superphylumLophotrochozoa
phylumMollusca
classBivalvia
Eubivalvia
RankNameAuthor
subclassAutobranchia(Groblen 1894)
infraclassPteriomorphia(Beurlen 1944)
MytilomorphiFerussac 1822
orderMytilida(Rafinesque 1815)
superfamilyMytiloideaRafinesque 1815
familyMytilidaeRafinesque 1815
genusModiolus(Lamarck 1801)
subgenusModiolusLamarck 1799
speciesfountainensis()

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
R. D. Hoare 2007Small, thin shelled, narrowly elongately spatulate in form; beaks near anterior margin, not prominent; dorsal margin straight before curving with broad convexity into narrowly convex posterior margin; ventral margin nearly straight; anterior margin short, convex; surface with only faint comarginal growth lines; interior features not observed. Specimens range in size from 14.3 mm long, 6.2 mm high to 7.3 mm long, 3.7 mm high.

The narrow, elongate shape and less prominent comarginal ornamentation distinguish M. (M.)fountainensis from other species of the subgenus.