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Exelissa

Gastropoda - Sorbeoconcha - Cryptaulacidae

Taxonomy
Exelissa was named by Piette (1860) [Sepkoski's age data: J Hett K Barr]. It is the type genus of Exelissinae.

It was assigned to Procerithiidae by Gründel and Parent (2001); to Neotaenioglossa by Sepkoski (2002); to Exelissinae by Guzhov (2004); and to Cerithiadae by Kaim (2004).

Synonymy list
YearName and author
1860Exelissa Piette
2001Exelissa Gründel and Parent p. 15
2002Exlessia Sepkoski, Jr.
2004Exelissa Guzhov p. S501
2004Exelissa Kaim p. 46

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
RankNameAuthor
classGastropodaCuvier 1797
orderSorbeoconchaPonder and Lindberg 1997
superfamilyCerithioidea(Férussac 1819)
familyCryptaulacidaeGründel 1976
subfamilyExelissinae
genusExelissaPiette 1860

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
A. V. Guzhov 2004Shell small or medium-sized, turriculate or, rarely, high-turriculate, with convex or straight generating line. Protoconch composed of one rounded and smooth whorl followed by three bicarinate whorls (subgenus Exelissa). Whorls flattened, nongradate. Suture shallow. Ornamentation composed of three primary ribs and several (0-3) secondary ribs. Spiral omamentation sometimes composed of rows of tubercles. Ribs crossed by folds, which constitute from four to nine axial rows. Folds prominent and coarse, carinate, forming tubercles originating at intersections with ribs. Last whorl narrowed and rounded, with tendency toward vermiform shape. Shell base high, cup-shaped, with numerous ribs and ends of folds. Aperture circular or oval.