| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
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. |
Is something missing? Join the Paleobiology Database and enter the data
|
|
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 |
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|
||||
|
|
||||
| Source: f = family, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Age range
Maximum range based only on fossils: base of the Early/Lower Campanian to the top of the Gelasian or 83.50000 to 1.80600 Ma
Minimum age of oldest fossil (stem group age): 70.6 Ma
Minimum age of oldest fossil (stem group age): 70.6 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Campanian - Middle Campanian | USA (Mississippi) | H. fragila (7456) | |
| Langhian - Serravallian | Netherlands | H. laevigata (186883 186884) | |
| Gelasian | Italy | Cingnla vitrea (178457) |