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.Bouchet, P. (2011). Costosyrnola thailandica Robba, Di Geronimo, Chaimanee, Negri & Sanfilippo, 2004. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=571809 on 2011-10-26
