| Phenacomargarites williamsae | |
|---|---|
| | |
| Shell of Phenacomargarites williamsae (holotype at MNHN, Paris) | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Trochida |
| Superfamily: | Trochoidea |
| Family: | Calliostomatidae |
| Genus: | Phenacomargarites |
| Species: | P. williamsae |
| Binomial name | |
| Phenacomargarites williamsae B. A. Marshall, 2016 | |
Phenacomargarites williamsae is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies. [1] [2]
The length of the shell attains 22.1 mm.
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This marine species occurs off the Solomon Islands
Calliostomatidae is a family of sea snails within the superfamily Trochoidea and the clade Vetigastropoda.

Falsimargarita is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.
Venustatrochus is a genus of sea snails, marine gastropod mollusks in the family Calliostomatidae.
Maurea is a genus of sea snails, marine gastropod mollusks, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Phenacomargarites is a genus of sea snails, marine gastropod mollusks, in the subfamily Fautricinae of the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Venustatrochus atlantis is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Venustatrochus eclectus is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Venustatrochus galateae is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Venustatrochus malaita is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Venustatrochus youngi is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Falsimargarita callista is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Falsimargarita challengerica is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Falsimargarita coriolis is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Falsimargarita eximia is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Falsimargarita kapala is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Falsimargarita tangaroa is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Phenacomargarites incomptus is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Phenacomargarites titan is a species of sea snail, a marine gastropod mollusk, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Benthastelena is a genus of sea snails, marine gastropod mollusks, in the family Calliostomatidae.
Fautor is a genus of sea snails, marine gastropod mollusks, in the subfamily Calliostomatinae ( of the family Calliostomatidae.