一个新化石种的发现及其意义

东北地区是我国非金属矿——硅藻土矿蕴藏量非常丰富的地区之一, 其中吉林省又是三省之冠。中新长茅藻Actinella miocenica Li, sp。nov.就发现在敦化地区新生界盆地的硅藻土矿层中。硅藻土矿在敦化地区主要分布在高松树、秋梨沟一带, 在两处的硅藻土中, 都保存了丰富的硅藻植物化石, 中新长茅藻就是这些硅藻化石中的一个新化石种。

A NEW FOSSIL SPECIES (DIATOM) RECORDED AND ITS SIGNIFICANCE

A new diatom species, Actinella miocenica is erected and described in this paper. The species was collected from diatomiferous sediment cropping out at Qui Ligou, Deng Hua County, Jiling Province, China. It is characetrized by valve clavate, with ends of obtuse rounded and acute rounded.Frustule in girdle view cuneate, without the intercalary band and short septa. The specimens of this pater were examined using a Scanning Electron Microscopy, each end of valve in inner valve view, with a 1abiate process.Them found are important on the Taxonomy of Actinella genus. The new fossil diatom recorded from miocene continental strata. The research on new species plags an important significancei in stratigraphic subdivisionand correlation.