A Late Pleistocene molluscan fauna sampled at Ban Praksa, near the Chao Phraya River mouth (Lower
Central Plain of Bangkok, Thailand) is herein analyzed and paleoecologically characterized, revealing a
shallow infralittoral, coarse/hard-bottomed environment. The comparison of the Ban Praksa association
with several coeval ones recovered from Phra Pradaeng Formation seems to be evidence of a 10,000 year
hiatus between two separate groups of marine faunas, possibly belonging to different interstadial transgressive
peaks that occurred during the long-term sea-level regression following the Last Interglacial.