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Lysis

Gastropoda - Trichotropidae

Taxonomy
Lysis was named by Gabb (1864) [Sepkoski's age data: K Sant-l K Maes].

It was assigned to Thaididae by Packard (1922); to Neotaenioglossa by Sepkoski (2002); and to Lysinae by Saul and Squires (2008).

Synonymy list
YearName and author
1864Lysis Gabb
1922Lysis Packard p. 431
2002Lysis Sepkoski, Jr.
2008Lysis Saul and Squires p. 123

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Protostomia
Spiralia
Schizocoela
phylumMollusca
RankNameAuthor
classGastropodaCuvier 1797
superorderHypsogastropoda(Ponder and Lindberg 1997)
infraorderLittorinimorphaGolikov and Starobogtov 1975
superfamilyCalyptraeoideaLamarck 1809
familyTrichotropidaeGray 1850
subfamilyLysinae
genusLysisGabb 1864

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
L. R. Saul and R. L. Squires 2008Turbinate to crepiduliform gastropods with a rapidly expanding whorl diameter having the columella/ inner lip flattened, expanded, and submerged to form a narrow to broad shelf or deck. Shell sculptured by spiral cords or smooth. Nonumbilicate. Aperture with very slight anterior siphonal notch.