Fenestrodaphne

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Fenestrodaphne
Fenestrodaphne pulchra MA70986-a.jpg
Holotype of Fenestrodaphne pulchra
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Superfamily: Conoidea
Genus:† Fenestrodaphne
Powell, 1944
Species:
†F. pulchra
Binomial name
†Fenestrodaphne pulchra
Powell, 1944

Fenestrodaphne is a genus of minute gastropod molluscs belonging to the superfamily Conoidea, currently unassigned to a family. [1] The genus is a monotypic fossil taxon, currently known to only have one member, Fenestrodaphne pulchra. [2] It is known to occur in the middle Miocene in fossil beds of South Australia.

Contents

Description

In the original description, Powell described the genus and species as below:

The above new genus is proposed for a solitary Daphnellid which fits no described genus. It is nearest to Asperdaphne , but has a very different protoconch, which is paucispiral, small, rounded, flattened on top, of 1½ whorls, with the tip inrolled. The whole closely axially costate, crossed by two weak spiral keels. The protoconch passes imperceptibly into the post-nuclear sculpture by the addition of spirals, one above and another between the original two. The adult sculpture is of closely spaced, narrow spiral cords and threads, crossed by axial threads. The outer lip is thin, and the sinus sutural, not very deep.
Fenestrodaphne pulchra: Small, ovate, with convex whorl outlines, weakly shouldered on the spire-whorls at about four-fifths whorl height by the uppermost and weakest of four narrow primary spiral cords. There is an intermediate thread in each interspace. On the body-whorl there are ten primary cords, and one, sometimes two, threads in the interspaces. The anterior end bears about ten linear-spaced spiral cords. The surface is delicately fenestrated by the crossing of the secondary spirals and closely spaced axial threads. [3]

The holotype measured 6.1 mm (0.24 in) in height, with a diameter of 3 mm (0.12 in). [3]

Taxonomy

Both the genus and species were first described by A. W. B. Powell in 1944 in the same paper, noting the species' similarity to Asperdaphne . [3] The holotype of the species is held by the Auckland War Memorial Museum. [4] [5] Alan Beu in 2011 also noted the species' similarity to Asperdaphne tasmanica , suggesting that both species may be in the genus Taranis . [6] While part of the superfamily Conoidea, the genus was excluded from the family Turridae by Yu I Kantor et al. in 2024. [7]

Distribution

The species is known to have lived in the Middle Miocene, and has been found in the lower Dry Creek Sands, Metropolitan Abattoirs Bore of the St Vincent Basin, in Adelaide, South Australia, at a depth of between 122–152 m (400–499 ft). [4] [8]

References

  1. ↑ Fenestrodaphne A. W. B. Powell, 1944 † . Retrieved through: World Register of Marine Species  on 6 October 2025.
  2. ↑ Fenestrodaphne pulchra A. W. B. Powell, 1944 † . Retrieved through: World Register of Marine Species  on 6 October 2025.
  3. 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.
  4. 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. Wikidata   Q135397912.
  5. ↑ "Fenestrodaphne pulchra". Collections Online. Auckland War Memorial Museum . Retrieved 6 October 2025.
  6. ↑ Beu, A. G. (March 2011). "Marine Mollusca of isotope stages of the last 2 million years in New Zealand. Part 4. Gastropoda (Ptenoglossa, Neogastropoda, Heterobranchia)". Journal of the Royal Society of New Zealand. 41 (1): 1–153. doi:10.1080/03036758.2011.548763. ISSN   0303-6758. Wikidata   Q54553193.
  7. ↑ Kantor, Yu I; Bouchet, Philippe; Fedosov, Alexander; Puillandre, Nicolas; Zaharias, Paul (December 2024). "Generic revision of the Recent Turridae (Neogastropoda: Conoidea)". Journal of Molluscan Studies. 90 (5): 1–40. doi:10.1093/mollus/eyae032.
  8. ↑ 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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