Syrnola (Costosyrnola) thailandica (Robba, Di Geronimo, Chaimanee, Negri & Sanfilippo, 2003) Costosyrnola thailandica is a species of sea snail, a marine gastropod mollusc in the family Pyramidellidae, the pyrams and their allies.

The species is one of a number within the genus Costosyrnola.

The other species being Costosyrnola nitidissima.

[3] This marine species occurs off the Gulf of Thailand.

This Pyramidellidae-related article is a stub.