Late Cretaceous strata of the Western Tarim Basin, Southern Xinjiang, China are divided into the Kukebai, Wuyitake. Yigeziya and Tuyilouk Formations. The gastropod faunas can be arranged into six communities corresponding to broad depositional environments. Two communities commonly occur in the nearshore shoal environments: the Vernedia pusillina Community from the Lower Member of the Kukebai Formation and the Trochactaeon (Neocylindrites)-Actaeonella Community from the Lower Member of the Yigeziya Formation. Three communities occur in the shelf environments: these are the Helicaulax and Ascensovoluta-Gyrodes Communities of the lower and upper parts of the Upper Member of the Kukebai Formation respectively and the Ampullina-Cantharus Community of the Middle-Upper Member of the Yigeziya Formation. A hypersaline environment is indicated by the Haustator-Corbula Community from the Middle Member of the Kukebai Formation.