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Hyala
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).
It was assigned to Rissoidae by Ponder (1984); to Neotaenioglossa by Sepkoski (2002); and to Capulidae by Colgan et al. (2007).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1852 | Hyala Adams and Adams p. 359 |
| 1984 | Hyala Ponder p. 52 |
| 2002 | Hyala Sepkoski |
| 2007 | Hyala Colgan et al. |
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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
| Reference | Diagnosis | |
|---|---|---|
| W. F. Ponder 1984 | Shell. 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 |