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Haydenia

Gastropoda - Cassidae

Taxonomy
Haydenia was named by Tyron (1884) [Sepkoski's age data: K Camp-u].

It was assigned to Buccininae by Tyron (1884); to Cassididae by Stewart (1927); and to Neotaenioglossa by Sepkoski (2002).

Synonymy list
YearName and author
1884Haydenia Tyron p. 151
1927Haydenia Stewart p. 381
2002Haydenia Sepkoski, Jr.

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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
superfamilyTonnoidea(Suter 1913)
familyCassidaeLatreille 1825
familyCassididaeAdams and Adams 1853
genusHaydenia

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
G. W. Tyron 1884Shell massive, allied, in general form, to Oliva, spire low. Outer lip simple, not thickened nor crenulate ; inner lip incrusted, callus marked posteriorly, without teeth or folds ; canal slightly recurved ; anterior extremity of the mouth notched, and a small sinus at the posterior extremity of the aperture, where the oiiter lip unites with the body-whorl. Surface ornamented as in some of the Buccinidse. This curious form is probably a link between Buccinum and Volutharpa.