Uberella marwicki
| Uberella marwicki Temporal range:
| |
|---|---|
| Holotype from Auckland War Memorial Museum | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Naticidae |
| Genus: | Uberella |
| Species: | †U. marwicki
|
| Binomial name | |
| †Uberella marwicki A. W. B. Powell, 1935
| |
Uberella marwicki is an extinct species of sea snail, a marine gastropod mollusc, in the family Naticidae.[1] Fossils of the species date to early Miocene strata of the west coast of the Auckland Region, New Zealand.
Description
In the original description, Powell described the species as follows:
Shell small, solid, globular, smooth. Spire depressed, about one-fourth the height of the aperture. Whorls four, including a typical paucispiral protoconch of one whorl. Suture abutting and somewhat impressed; axial growth lines fairly prominent for a short distance below the suture. Umbilicus small, not deep. Parietal callus narrow, widest above, with a small semi-circular gap in it at the umbilicus, and very much thickened on the lower section of the columella and around the basal part of the aperture.[2]
The holotype of the species measures 6.5 mm (0.26 in) in length and has a diameter of 6.5 mm (0.26 in).[2] The species can be differentiated from other members of Uberella due to having a very large lower columella and basal lip, and due to the semi-circular gap in the species' callus above its small umbilicus.[2]
Taxonomy
The species was first described by A. W. B. Powell in 1935,[2] who named the species after New Zealand palaeontologist John Marwick.[3] The holotype was collected at an unknown date prior to 1935 from fallen rocks at the southern end of Maukatia Bay, south of Muriwai, Auckland Region (then more commonly known as Motutara), and is held in the collections of Auckland War Memorial Museum.[4][5]
Distribution
This extinct marine species occurs in early Miocene strata of the Nihotupu Formation of New Zealand, on the west coast of the Waitākere Ranges of the Auckland Region, New Zealand.[4][6]
References
- ^ Uberella marwicki (A. W. B. Powell, 1935) †. Retrieved through: World Register of Marine Species on 19 January 2026.
- ^ a b c d Powell, A. W. B. (1935). "Tertiary Mollusca from Motutara, West Coast, Auckland". Records of the Auckland Institute and Museum. 1: 327–340. ISSN 0067-0464. JSTOR 42905961. Wikidata Q58676576. This article incorporates text from this source, which is under a CC BY 4.0 license.
- ^ Keyes, I. W. (December 1971). "Genera and species of living and fossil organisms named in honour of Dr John Marwick". New Zealand Journal of Geology and Geophysics. 14 (4): 631–633. doi:10.1080/00288306.1971.10426325. ISSN 0028-8306. Wikidata Q114642760.
- ^ a b Blom, Wilma M. (2025). "Annotated Catalogue of Fossil and Extant Molluscan Types in the Auckland War Memorial Museum". Bulletin of the Auckland Museum. 22. doi:10.32912/BULLETIN/22. ISSN 1176-3213. OCLC 1550165130. Wikidata Q135397912.
- ^ "Uberella marwicki". Collections Online. Auckland War Memorial Museum. Retrieved 19 January 2026.
- ^ Maxwell, P.A. (2009). "Cenozoic Mollusca". In Gordon, D.P. (ed.). New Zealand Inventory of Biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Christchurch: Canterbury University Press. p. 243. ISBN 978-1-877257-72-8.