广西、贵州和川东二叠纪生物礁的钙藻化石及其古生态环境

广西，贵州和川东二叠纪礁相岩石和礁后相岩层内获得了红藻Solenoporella,Gymnocodium,Permocalcu-lus；绿藻Anthracoporella,Mizzia以及显微疑难藻类化石Pseudovermiporella,Tubiphytes等，除了广西隆林有中二叠世茅口期藻类化石外，其它均属于晚二叠世乐平世的分子，这些藻类植物一般生活于热带和亚热带，正常盐度的浅海水内，其水深不大于30m，川东，鄂西晚二叠世礁属于浅水海绵礁，而非深水礁。

ON SOME PERMIAN CALCAREOUS ALGAE FROM GUANGXI,GUIZHOU PROVINCES AND EAST SICHUAN,AND THEIR PALEOECOLOGICAL ENVIRONMENTS

Some Permian calcareous algae from the reefs and reef related rocks in northwestern Guangxi, Central Guizhou as well as East Sichuan are des cribed in present paper. These algae include: (1) red algae: Solenoporella, Gymnocodium, Permocalculus ; (2) green algae: Anthracoporella, Mizzia and (3) Microproblematica: Pseudovermiporella, Tubiphytes . They all belong to the elements of Late Permian, except that some occur in Middle Permian reefs, northwestern Guangxi. The algae found in East Sichuan are collected totally from the cores obtained during exploration of oil and gas in that region. These algal plants lived in shallow marine waters of normal salinity, in tropical and subtropical areas, with a depth of less than 30m. The present authors believe that the reefs in East Sichuan and West Hubei are still regarded as shallow water sponge reefs rather than deep water reefs mentioned by the others.thers