Plagiostropha sinecosta is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.[2]
This marine species is endemic to Australia and occurs in the demersal zone off Port Hedland, Western Australia, at a depth of 200 metres (660 ft).
Plagiostropha sinecosta is a species of sea snail, a marine gastropod mollusk in the family Drilliidae.