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钙藻是可以发生生物钙化作用形成钙质“骨骼”的分属多个门类的藻类的俗称。钙藻最早出现于寒武纪,奥陶纪发生第一次辐射演化。本文系统讨论了绿藻门绒枝藻目(Dasycladales)、羽藻目钙扇藻科(Udoteaceae)的科和属级分类标准和红藻门珊瑚藻科、管孔藻科(Solenoporaceae)属级分类标准及其中各属分类中存在的问题。塔里木盆地晚奥陶世在塔中—巴楚台地和塔北台地发育了一套礁滩相良里塔格组碳酸盐岩,其中含有丰富的钙藻化石。本文系统描述了来自塔里木盆地塔中、巴楚、塔北地区取心井上奥陶统良里塔格组岩层中的钙藻化石11个属15个种。包括绿藻门绒枝藻目西莱特藻科(Seletonellaceae)的Dasyporella,Kazakhstanelia,Vermiporella,Aphroporella,Arthroporella,绿藻门的羽藻目Bryopsidales(siphonales)的钙扇藻科的Dimor phosiphon,Palaeo porella,红藻门珊瑚藻目(Corallinales)的管孔藻科的Solenopora,Parachaetetes及Corallinales incertus familiae的Petro-phyton,以及分类位置不明的Monili porella。其中绒枝藻Ajakmalajsoria被视作Kazakhstanelia的同义名。
Calcareous algae is a common name for algae that belong to multiple classes and form calcareous “skeletons” where biological calcification takes place. Calcareous algae first appeared in Cambrian, and the first radiation evolution took place in Ordovician. This paper systematically discussed the families and genera of Dasycladales and Udoteaceae of the Chlorophyta and the families of the Coral Species of the Rhodophyta, Solenoporaceae Standard and each of them belongs to the category of problems. Late Ordovician in Tarim Basin In the Tazhong-Bachu and Tabei terraces, a set of carbonate rocks of the Reef-Tan-Liangliangtag Formation is developed, which is rich in calcareous fossils. This paper systematically describes 11 genera and 15 species of calcareous fossils from the Ordovician Lianglitag Formation in the Tarim, Bachu and Tabei areas, Tarim Basin. Dimor phosiphon, Palaeo porella, reds of the calcium-phoreridae, including Dasyporella, Kazakhstanelia, Vermiporella, Aphroporella, Arthroporella of the Seletonellaceae of the Chlorella glabrata, Bryophytes (siphonales) Solenopora, Parachaetetes, and Corallinales incertus familiae from Corallinales, Petro-phyton, and Monili porella, unknown to taxa. Among them, Ajakmalajsoria is considered synonymous with Kazakhstanelia.