Well preserved cyclocrinitids (calcareous green algae) are reported from early Palaeozoic deposits of Spiti, Himachal Pradesh, India. Casts of the algal fossils are preserved in calcareous grey siltstone unit of the Takche Formation (Late Ordovician–Early Silurian) which appears rusty/earthy brown due to weathering. The assemblage includes Cyclocrinites favus, Cyclocrinites pyriformis, Cyclocrinites cf. welleri, Cyclocrinites sp. and Cyclocrinites globosus. Both Cyclocrinites cf. welleri and Cyclocrinites globosus are reported for the first time from the entire Tethyan Himalaya, India. The described algal flora basically denotes relatively shallow marine depositional setting and low to moderate hydrodynamic conditions.

据报道，印度喜马al尔邦斯皮提的早古生代沉积物中保存完好的环线虫（钙质绿藻）。藻类化石的铸件保存在塔克切组的钙质灰色粉砂岩单元中（奥陶纪晚期-志留纪晚期），由于风化而显得生锈/土褐色。该组合包括Cyclocrinites favus，Cyclocrinites膜虫，Cyclocrinites参见 welleri，Cyclocrinites sp。和环球藻球。两种圆晶沸石都比照。welleri和球藻球蛋白是整个印度特提斯喜马拉雅山脉的首次报道。所描述的藻类植物基本上表示相对较浅的海洋沉积环境和低至中等的水动力条件。