Vexillum subquadratum

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Vexillum subquadratum is a small sea snail in the ribbed miters family (Costellariidae). The shell grows up to about 23 mm long. It lives in warm marine waters, including the Red Sea and the Indo-Pacific region from Mauritius and the Philippines to Polynesia and Hawaii.

Taxonomy (simplified):
- Kingdom: Animalia
- Phylum: Mollusca
- Class: Gastropoda
- Subclass: Caenogastropoda
- Order: Neogastropoda
- Superfamily: Turbinelloidea
- Family: Costellariidae
- Genus: Vexillum
- Species: subquadratum

Described in 1874 by Sowerby II & Sowerby III. A synonym once used is Mitra subquadrata.