| Zeidora tasmanica | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Lepetellida |
| Family: | Fissurellidae |
| Subfamily: | Zeidorinae |
| Genus: | Zeidora |
| Species: | Z. tasmanica |
| Binomial name | |
| Zeidora tasmanica (Beddome, 1883) | |
| Synonyms [1] | |
| |
Zeidora tasmanica is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets and slit limpets. [1]
The length of the shell attains 5 mm, its height 0.8 mm.
(Described as Zeidora legrandi) The white, delicate shell is depressedly conical and cap-shaped. It is elliptic-oblong in basal outline, rounded behind, truncately rounded and deeply cleft in front, with a narrow sunken fissural band extending to the apex. The back is depressedly convex. The apex is minute and short, hooked and somewhat adpressed, almost reaching the posterior margin.
The ornament consists of concentric threadlets and obliquely radial threadlets, which produce an elegant cancellation of rhombic spaces. In the apical region the ornament is extremely fine, but beyond it the cancellation is visible to the unaided eye (there are about nine rows of rhombic spaces in a radial distance of 2 millimetres measured from the periphery). The margin of the aperture is closely crenulate-serrate. The fissural band is margined on each side by an elevated rounded keel, which is crenately sculptured. The scars on the fissural band are arched, sharp and close, but not contiguous.
The inside is glossy and smooth. The septum is narrowly crescentic (extending in the middle line to about one-fifth and on the sides to about one-fourth of the length of the aperture), much depressed posteriorly (about one-half the depth of the shell) becoming shallower on the anterior border, which almost reaches the base of the shell. [2]
This marine species is endemic to Australia and occurs off Tasmania.
Fissurellidae, common name the keyhole limpets and slit limpets, is a taxonomic family of small to medium-sized limpet-like sea snails, marine gastropod molluscs in the clade Vetigastropoda.
Zeidora maoria is a species of small sea snail, specifically a keyhole limpet, a marine gastropod mollusc in the family Fissurellidae, the keyhole limpets.
Emarginula crassa, the thick slit limpet, is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets.
Emarginula fissura, the common slit limpet, is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets.
Emarginula huzardii is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets.
Scutus unguis, common name the northern duck's bill, is a species of large sea snail or limpet, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets and slit limpets.
Zeidora naufraga is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets.
Zeidora neritica is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets.
Zeidora is a genus of sea snails, marine gastropod mollusks in the family Fissurellidae, the keyhole limpets.
Puncturella pileolus is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets and slit limpets.
Vacerrena kesteveni is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets and slit limpets.
Zeidora antarctica is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets and slit limpets.
Zeidora bahamondei is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets and slit limpets.
Zeidora calceolina is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets and slit limpets.
Zeidora flabellum is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets and slit limpets.
Zeidora galapagensis is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets and slit limpets.
Zeidora lodderae is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets and slit limpets.
Zeidora nesta is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets and slit limpets.
Fossarina reedi, common name Reed top shell, is a species of very small sea snail, a marine gastropod mollusc or micromollusk in the family Trochidae, the top snails.
Guraleus flaccidus is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.