| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Norrisia norrisii (Norris's top-shell)
Taxonomy
Trochiscus norrisii was named by Sowerby I (1838). It is extant.
It was recombined as Norrisia norrisi by Valentine (1957); it was recombined as Norrisia norrisii by Jordan (1926), Alf (2019), Hendy (2021).
It was recombined as Norrisia norrisi by Valentine (1957); it was recombined as Norrisia norrisii by Jordan (1926), Alf (2019), Hendy (2021).
Sister species lacking formal opinion data
Entered
by A. Hendy on 2020-03-25
Synonyms
|
Synonymy list
| Year | Name and author |
|---|---|
| 1838 | Trochiscus norrisii Sowerby I p. 96 |
| 1839 | Turbo rotelliformis Jay p. 111 figs. Pl. 1, Figs. 2- 3 |
| 1864 | Trochiscus convexus Carpenter p. 652 |
| 1895 | Trochiscus norrisii Ashley p. 343 |
| 1926 | Norrisia norrisii Jordan p. 246 |
| 1957 | Norrisia norrisi Valentine p. 300 |
| 2019 | Norrisia norrisii Alf p. 77 figs. Figure 13 |
| 2021 | Norrisia norrisii Hendy |
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.
Norrisia norrisii Sowerby I 1838 [Norris's top-shell]
show all | hide all
Invalid names: Trochiscus convexus Carpenter 1864 [synonym], Turbo rotelliformis Jay 1839 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| A. Alf 2019 | Shell 27–52 mm, thick, heavy, broader than high, spire dome-shaped, whorls smooth, rounded; umbilicus deep, columella with low tubercle at base; color chestnut brown to light brown on upper part of whorl, changing gradually to black near umbilicus, columellar wall tinged with light green; interior pearly white; juvenile shell bicarinate, sculptured with incised spiral striae, mottled with white on spire; base, umbilical area white; operculum spirally tufted along outer edge of each volution Living animal bright reddish orange. |
Measurements
No measurements are available
|
|
||||
|
|||||
|
|
||||
|
|
||||
| Source: superf = superfamily, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Age range: base of the Late/Upper Miocene to the top of the Late/Upper Pleistocene or 11.63000 to 0.01170 Ma
Collections (40 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Miocene - Late/Upper Pliocene | USA (California) | Norrisia norrisi (238420) | |
| Early/Lower Pleistocene | USA (California) | Norrisia norrisi (202495 223033) | |
| Pleistocene | Mexico (Baja California) | Norrisia norrisi (96590 96592 96593) | |
| Quaternary | USA (California) | Norrisia norrisii (37937) | |
| Middle Pleistocene | USA (California) | Norrisia norrisi (202493 203114) Norrisia norrisii (203113) | |
| Late/Upper Pleistocene (interglacial) | Mexico (Baja California) | Norrisia norrisi (89573 194399 194400 194405 194406 194407 194410 194415 194421 194430 194546) | |
| Late/Upper Pleistocene | Mexico (Baja California) | Norrisia norrisi (96591) | |
| Late/Upper Pleistocene | Mexico | Norrisia norrisi (226464) | |
| Late/Upper Pleistocene | USA (California) | Norrisia norrisi (59063 96566 96939 160361 202490 219030) Norrisia norrisii (222659 226458 240593 240594 240595 240600 240601 240602 240603 240635) Trochiscus norrisii (222674) |