Tosapusia kalimnanensis

Tosapusia kalimnanensis
Holotype and paratype from the South Australian Museum
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Turbinelloidea
Family:	Costellariidae
Genus:	Tosapusia
Species:	T. kalimnanensis
Binomial name
Tosapusia kalimnanensis (Cernohorsky, 1970)
Synonyms [1]
† Balcomitra terebraeformis(Tate), Darragh (invalid (homonym)) † Mitra terebraeformisTate, 1889 (invalid (homonym)) † Uromitra terebriformisTate, Harris, 1897 (invalid (homonym)) † Vexillum (Costellaria) kalimnanenseCernohorsky, 1970 † Vexillum kalimnanenseCernohorsky, 1970

Tosapusia kalimnanensis is an extinct species of sea snail, a marine gastropod mollusk, in the family Costellariidae, the ribbed miters. ^[1] The species is known from Pliocene fossil formations in Victoria, Australia.

Description

Cernohorsky described the species as below:

Shell up to 20.0 mm (0.79 in) in length, somewhat terebriform in shape, last whorl slightly inflated, smooth and shining, teleoconch of 7 almost flat-sided whorls, protoconch of 1½-1¾ smooth embryonic whorls. Sutures distinct and indented by a narrow, ill-defined subsutural band, whorls sculptured with slender, angulate and slightly curved axial ribs, interspaces smooth, base of body whorl constricted, siphonal fasciole with a few oblique cords. Aperture shorter than the spire, outer lip convex but constricted basally, columella with 4 oblique folds, siphonal canal straight. ^[2]

The species' shell is visually similar to T. turriformis , but can be distinguished due to T. kalimnanensis having narrower axial elements, and due to T. turriformis having a whorl periphery shifted abapically. ^[3]

Taxonomy

The species was first described as Mitra terebraeformis in 1889 by Ralph Tate. ^[4] In 1970, Walter Oliver Cernohorsky gave the species the provisional name Vexillum (Costellaria) kalimnanense, after finding that the name given by Reeve was invalid name due to a different species being described using this name in 1848 by Timothy Abbott Conrad. ^[5] In 2017, the species was recombined as a part of the genus Tosapusia , and given the name Tosapusia kalimnanensis. ^{[3] [6]}

Distribution

Fossils of this marine species date to the early Pliocene, and have been found in the Grange Burn Formation of the Otway Basin and the upper beds of the Muddy Creek Formation in Victoria, Australia. ^{[2] [6]}

References

1. Tosapusia kalimnanensis (Cernohorsky, 1970) † . Retrieved through: World Register of Marine Species  on 29 September 2025.
2. Cernohorsky, W. O. (1979). "Revision of the Australian and New Zealand Tertiary and Recent Temperate Species of the Family Costellariidae (Mollusca: Gastropoda)". Records of the Auckland Institute and Museum . 16: 109–169. ISSN   0067-0464. JSTOR   42906279. Wikidata   Q58677110.
3. Fedosov, Alexander E.; Puillandre, Nicolas; Herrmann, Manfred; Dgebuadze, Polina; Bouchet, Philippe (1 March 2017). "Phylogeny, systematics, and evolution of the family Costellariidae (Gastropoda: Neogastropoda)". Zoological Journal of the Linnean Society. 179 (3): 541–626. doi:10.1111/zoj.12431.
4. Tate, R. (1889). "The gastropods of the older Tertiary of Australia (Part II)". Transactions of the Royal Society of South Australia. 11: 141.
5. Cernohorsky, W. O. (1970). "Systematics of the families Mitridae and Volutomitridae (Mollusca: Gastropoda)". Bulletin of the Auckland Institute and Museum . 8: 28. ISSN   0067-0456. OCLC   696235. Wikidata   Q115112302.
6. 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.

Further reading

• Turner, Hans (2001). Katalog der Familie Costellariidae Macdonald 1860 (Gastropoda: Prosobranchia: Muricoidea) (in German). Hackenheim: Conchbooks. p. 100. ISBN   9783925919497.