Austrotoma intertexta
| Austrotoma intertexta Temporal range:
| |
|---|---|
| Holotype from Auckland War Memorial Museum | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Pseudomelatomidae |
| Genus: | Austrotoma |
| Species: | †A. intertexta
|
| Binomial name | |
| †Austrotoma intertexta (A. W. B. Powell, 1944)
| |
| Synonyms[1] | |
| |
Austrotoma intertexta is an extinct species of sea snail, a marine gastropod mollusc, in the family Pseudomelatomidae.[1] Fossils of the species date to late Oligocene and early Miocene strata of the Port Phillip Basin of Victoria, Australia.
Description
In the original description, Powell described the species as follows:
Moderately large, fusiform, with turreted spire; whorls 7, including typical, large, smooth, blunt protoconch of 15 whorls. Aperture about half or a little less than half the height of shell. Axials distinct, fold-like, flexuous, extending from shoulder angle to lower suture, becoming obsolete over base, 21 on penultimate. Shoulder broad, deeply concave. Suture with a weak fold below it. Spiral sculpture consisting of four sharply raised narrow cords with some weaker intermediates on the shoulder or posterior sinus area, and six to eight rather strong, narrow, sharply raised cords with intermediates, extending from the shoulder angle to the lower suture. There are about twenty-four primaries and some intermediates on the body-whorl and base. The fasciole bears about nine spaced, narrow, spiral lirations. The whole surface is crowded with fine crisp axial growth lines. The general appearance of the sculpture resembles that of a woven basket.[2]
The holotype of the species has an estimated height of 44 mm (1.7 in), and a diameter of 16.5 mm (0.65 in).[2]
Taxonomy
The species was first described by A. W. B. Powell in 1944, using the name Liratomina intertexta.[2] While the name Liratomina intertexta is accepted by Darragh (1970, 1985 and 2024)[3][4][5] the World Register of Marine Species lists the accepted name as Austrotoma intertexta.[1] The holotype was collected prior to 1944 from Torquay, Victoria, Australia. It is a part of the H. J. Finlay Collection, which is held by the Auckland War Memorial Museum.[6][7]
Distribution
This extinct marine species occurs in late Oligocene and early Miocene strata of the Port Phillip Basin of Victoria, Australia, including the Jan Juc Formation and Puebla Formation.[6][5]
Gallery
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Side view of holotype
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Reverse view of holotype
References
- ^ a b c Austrotoma intertexta (A. W. B. Powell, 1944) †. Retrieved through: World Register of Marine Species on 26 February 2026.
- ^ a b c 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. This article incorporates text from this source, which is under a CC BY 4.0 license.
- ^ 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.
- ^ Darragh, Thomas A. (January 1985). "Molluscan biogeography and biostratigraphy of the Tertiary of southeastern Australia". Alcheringa. 9 (2): 83–116. doi:10.1080/03115518508618960. ISSN 0311-5518. Wikidata Q58261326.
- ^ a b 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.
- ^ 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.
- ^ "Liratomina intertexta". Collections Online. Auckland War Memorial Museum. Retrieved 26 February 2026.