New Fossil Beetles of the Family Ommatidae (Coleoptera: Archostemata) from the Jehol Biota of China  

作　　者：TAN Jingjing REN Dong SHIH Chungkun GE Siqin 

机构地区：[1]College of Life Sciences, Capital Normal University, Beijing 100037 [2]Institute of Zoology, Chinese Academy of Sciences, Beijing 100080

出　　处：《Acta Geologica Sinica(English Edition)》2006年第4期474-485,共12页地质学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.30025006,30370184,30430100,30200025);the Beijing Natural Science Foundation(No.5032003);Scientific Research Key Program(KZ200410028013);RCQJ Project of the Beijing Municipal Commission of Education.

摘　　要：A new genus with one new species and five new species of genus Amblomma of fossil ommatids are described and illustrated： Euryomma tylodes gen. et sp. nov., Amblomma cyclodonta sp. nov., Amblomma miniscula sp. nov., Amblomma porrecta sp. nov., Amblomma eumeura sp. nov., and Amblomma protensa sp. nov. All of them were collected from the Upper Jurassic or Lower Cretaceous Yixian Formation of western Liaoning, China. A key to the species of Amblomma is given. The wide epipleural space shows that Euryomma may be a primitive genus in Ommatidae. Many different species of Amblomma occurred within the same sedimentary horizon in this area could be environmental changes caused by frequent volcanic activities during the deposition of the Yixian Formation.A new genus with one new species and five new species of genus Amblomma of fossil ommatids are described and illustrated： Euryomma tylodes gen. et sp. nov., Amblomma cyclodonta sp. nov., Amblomma miniscula sp. nov., Amblomma porrecta sp. nov., Amblomma eumeura sp. nov., and Amblomma protensa sp. nov. All of them were collected from the Upper Jurassic or Lower Cretaceous Yixian Formation of western Liaoning, China. A key to the species of Amblomma is given. The wide epipleural space shows that Euryomma may be a primitive genus in Ommatidae. Many different species of Amblomma occurred within the same sedimentary horizon in this area could be environmental changes caused by frequent volcanic activities during the deposition of the Yixian Formation.

关 键 词：Ommatidae Jehol Biota Late Jurassic Early Cretaceous Yixian Formation LIAONING 

分 类 号：P534.5[天文地球—古生物学与地层学]