Biology:Taniella motutaraensis
| Taniella motutaraensis | |
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| Holotype from Auckland War Memorial Museum | |
Scientific classification 
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| Missing taxonomy template (fix): | Taniella |
| Species: | †T. motutaraensis
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| Binomial name | |
| †Taniella motutaraensis (A. W. B. Powell, 1935)
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| Synonyms[1][2][3] | |
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Taniella motutaraensis is an extinct species of sea snail, a marine gastropod mollusc, in the family Naticidae.[2] 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, oval, smooth except for numerous axial growth lines. Whorls 42⁄4, including a protoconch not clearly marked off, but with a tiny nucleus, and probably about 21⁄2 whorls. Spire blunt, broadly rounded, about one-fifth the height of aperture (suture to basal lip). Suture tangential. Parietal callus peculiar, fairly heavy, widest below as it is coalescent with the funicle, completely filling the umbilicus. The medial part of the callus is surmounted by a prominent tubercle, and the outer edge is bounded by a shallow groove. Basal lip much thickened, especially at the point of contact with the umbilical callus.[4]
The holotype of the species measures 8.9 mm (0.35 in) in height and 7.5 mm (0.30 in) in diameter.[4] The species can be identified due to having a prominent tubercule on its parietal callus, as well as the umbilicus being completely filled.[4]
Taxonomy
The species was first described by A. W. B. Powell in 1935 as Polinices motutaraensis.[4] It was moved to the Taniella subgenus Pristinacca in 1966 by Charles Alexander Fleming.[1][5] Its currently accepted name is Taniella motutaraensis, without a subgenus.[2]
The holotype was collected at an unknown date prior to 1935 from 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.[6][7]
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.[6] The Powell Bay site deposits of the Nihotupu Formation in the western Waitākere Ranges are mid-bathyal 800–2,000 m (2,600–6,600 ft).[8]
References
- ↑ 1.0 1.1 Fleming, Charles Alexander; Marwick, John (1966). Marwick's Illustrations of New Zealand Shells with a Checklist of New Zealand Cenozoic Mollusca. Wellington: R. E. Owen, Govt. Printer. p. 53. OCLC 955302.
- ↑ 2.0 2.1 2.2 Taniella motutaraensis (A. W. B. Powell, 1935) †. Retrieved through: World Register of Marine Species on 20 January 2026.
- ↑ Maxwell, P.A. (2009). "Cenozoic Mollusca". New Zealand Inventory of Biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia.. Christchurch: Canterbury University Press. p. 243. ISBN 978-1-877257-72-8.
- ↑ 4.0 4.1 4.2 4.3 , Wikidata Q58676576
This article incorporates text from this source, which is under a CC BY 4.0 license.
- ↑ Beu, A.G. (1970). "Bathyal Upper Miocene Mollusca from Wairarapa District, New Zealand.". Transactions of the Royal Society of New Zealand, Earth Sciences. 7 (12): 209-240.
- ↑ 6.0 6.1 , Wikidata Q135397912
- ↑ "Polinices motutaraensis". Auckland War Memorial Museum. https://www.aucklandmuseum.com/discover/collections/record/242032.
- ↑ , Wikidata Q104119200
Wikidata ☰ Q106106582 entry
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