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Hyala

Gastropoda - Capulidae

Taxonomy
Hyala was named by Adams and Adams (1852) [Sepkoski's age data: T Ol-u R Sepkoski's reference number: 909]. It is extant.

It was assigned to Rissoidae by Ponder (1984); to Neotaenioglossa by Sepkoski (2002); and to Capulidae by Colgan et al. (2007).

Synonymy list
YearName and author
1852Hyala Adams and Adams p. 359
1984Hyala Ponder p. 52
2002Hyala Sepkoski, Jr.
2007Hyala Colgan et al.

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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
superfamilyCapuloideaFleming 1822
familyCapulidaeFleming 1822
genusHyalaAdams and Adams 1852

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
W. F. Ponder 1984Shell. Small, thin, smooth, or with microscopic spiral threads. Aperture simple, oval, outer lip strongly prosocline, lacking a varix; weak posterior angulation present but no posterior sinus; shallowly but broadly excavated anteriorly. Protoconch smooth, of 22 whorls, lacking a distinct terminal varix, first whorl rising slightly above level of nucleus. Fig. 18E-G