Rugobela exsculpta

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Rugobela exsculpta
Temporal range: early Miocene
Rugobela exsculpta MA71111-a.jpg
Holotype from Auckland War Memorial Museum
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Genus:† Rugobela
Species:
†R. exsculpta
Binomial name
†Rugobela exsculpta

Rugobela exsculpta is an extinct species of sea snail, a marine gastropod mollusc in the superfamily Conoidea, currently unassigned to a family. [1] Fossils of the species date to the early Miocene, and occur in the strata of the Port Phillip Basin of Victoria, Australia.

Contents

Description

In the original description, Powell described the species as follows:

Resembles columbelloides , but with more numerous axials, which are persistent over the body-whorl (obsolescent over body-whorl in columbelloides)... Axials strong, rounded, slightly oblique, 20 on body-whorl, extending from shoulder-angle to lower suture, not extending over base. Spiral cords moderately strong, 5 to 6 on spire-whorls. Interspaces increasing to two or three times width of cords over middle area of base. Whorls 71⁄2, including smooth, polished, polygyrate protoconch of 31⁄2 whorls. [2]

The holotype of the species measures 7.2 mm (0.28 in) in height and 3.6 mm (0.14 in) in diameter. [2] The species has more numerous and persistent axial ribs than Rugobela humerosa . [3]

Taxonomy

R. exsculpta was first described by A.W.B. Powell in 1944. [2] The holotype was collected from the upper beds of Torquay, Victoria, [4] at an unknown date prior to 1944, and is held by the Auckland War Memorial Museum. [5] [6]

Distribution

This extinct marine species dates to the early Miocene, and occurs in the strata of the Port Phillip Basin of Victoria, Australia, known from the Puebla Formation. [5] [7]

References

  1. ↑ Rugobela exsculpta A. W. B. Powell, 1944 † . 25 November 2025. Retrieved through: World Register of Marine Species .
  2. 1 2 3 Powell, A. W. B. (1944). "The Australian Tertiary Mollusca of the Family Turridae". Records of the Auckland Institute and Museum . 3: 3–68. ISSN   0067-0464. JSTOR   42905993. Wikidata   Q58676624.
  3. ↑ Long, D. C. (1981). "Late Eocene and Early Oligocene Turridae (Gastropoda: Prosobranchiata) of the Brown's Creek and Glen Aire Clays, Victoria, Australia" (PDF). Memoirs of the National Museum of Victoria. 42 (1): 15–55. doi:10.24199/J.MMV.1981.42.03. ISSN   0083-5986. Wikidata   Q56195002.
  4. ↑ Darragh, Thomas A. (1970). "Catalogue of Australian Tertiary Mollusca (except chitons)" (PDF). Memoirs of the National Museum of Victoria. 31: 125–212. doi:10.24199/J.MMV.1970.31.14. ISSN   0083-5986. Wikidata   Q56194898.
  5. 1 2 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.
  6. ↑ "Rugobela exsculpta". Collections Online. Auckland War Memorial Museum . Retrieved 24 November 2025.
  7. ↑ Darragh, Thomas A. (August 2024). "A checklist of Australian marine Cenozoic Mollusca". Memoirs of Museum Victoria . 83: 37–206. doi:10.24199/J.MMV.2024.83.02. ISSN   1447-2546. Wikidata   Q136396722.
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