| Sinezona brevis | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Lepetellida |
| Family: | Scissurellidae |
| Genus: | Sinezona |
| Species: | S. brevis |
| Binomial name | |
| Sinezona brevis (Hedley, 1904) | |
| Synonyms [1] | |
| |
Sinezona brevis is a species of minute sea snail, a marine gastropod mollusc in the family Scissurellidae. [1]
The white shell reaches a height of 1 mm. The solid shell has a depressed, turbinate shape. It is openly perforate to imperforate. The sculpture shows distant longitudinal lamellate ribs that cross the whorl from the suture to the umbilicus. Their interstices contain raised spiral threads, which grow coarser on approaching the umbilicus. The protoconch contains 1½ whorl, concluding with a prominent varix. The three whorls are tabulate above, and rounded below. The body whorl descends rapidly. The aperture is roundly ovate. The sharp outer lip is convex. The inner lip spreads as a distinct callosity over the body, and sometimes seals the umbilicus partly or wholly up. The columella is concave. The narrow umbilicus is deep, and is bordered with a raised ridge, or is closed up. The foramen is large, and distant from the margin, to which a furrow joins it. The fasciole is extremity short, terminating half a whorl behind the aperture. it is bordered by keels and is traversed by lamellae, which correspond to the longitudinal ribs. [2]
This marine species occurs off New Zealand.
Coelotrochus chathamensis is a species of small sea snail, a marine gastropod mollusc in the family Trochidae, the top snails or top shells.
Scissurellidae, sometimes known by the common name little slit snails, are a taxonomic family of minute sea snails, marine gastropod molluscs or micromolluscs in the clade Vetigastropoda.
Sinezona is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Scissurellidae, the little slit shells.
Sinezona levigata is a species of minute sea snail, a marine gastropod mollusc or micromollusc in the family Scissurellidae, the little slit shells.
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Anatoma umbilicata is a species of sea snail, a marine gastropod mollusk in the family Anatomidae.
Sinezona bandeli is a species of minute sea snail, a marine gastropod mollusk in the family Scissurellidae.
Sinezona cingulata is a species of minute sea snail, a marine gastropod mollusk in the family Scissurellidae.
Sukashitrochus morleti is a species of minute sea snail, a marine gastropod mollusk in the family Scissurellidae.
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Isanda coronata is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Monilea incerta is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Anatoma japonica is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Anatomidae.
Scissurella mirifica is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Scissurellidae, the little slit snails.
Sinezona beddomei is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Scissurellidae, the little slit snails.
Sukashitrochus carinatus is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Scissurellidae, the little slit snails.