摘要
The coralline algae recognized in well Chenke — 2 , Xisha Islands since the Miocene include 11 genus in 3 families, 4 subfamilies. They are Lithophylloideae Lithophyllum Amph iroa;Mastophoroideae Spongites, Neogoniolithon and Lithoporella;Corallinoideae Jania and Corallina , Melobesiodideae Meso ph yllum , Aethesolithon and Lithothamnion;and Sporolithaceae Sporolithon. The algae categories were considered to be linked to different water depth. Corallinoid indicates a shallow water environment;Melobesioid indicates a deep water environment;Mastophoroid indicates a most shallow water environment;and Lithophylloid indicates a shallow water environment . There are 7 coralline algae assemblages identified from bottom to top.
