Li, Y., Liu, X., Ren, D., Li, X. & Yao, Y., June 2016. First report of Cixiidae insect fossils from the Miocene of the northeastern Tibetan Plateau and their palaeoenvironmental implications. Alcheringa 41, xxx–xxx. ISSN 0311-5518.
A new insect species, Cixius discretus (Hemiptera, Fulgoromorpha), from the Lower Miocene Garang Formation of Zeku County, Qinghai Province (northeastern Tibetan Plateau) is described. This species can be assigned to Cixiidae and represents the first fossil representative of this family from Qinghai Province. Based on the recent single-origin hypothesis and the distribution of tectonic plates in the Cretaceous, we consider that ancient Cixius had dispersed globally prior to the Cretaceous. Through analysis of the habitats of extant Cixius, the palaeoclimate and fossil flora of the Zeku area during the Miocene, we interpret the climate of Zeku in the early Miocene to have been warm-temperate and mildly arid. The new species constitutes evidence of wooded and shrubby habitats in Zeku during the Miocene.
Yi Li [liy0124@sina.com], XiaoHui Liu [liuxh8917@163.com], Dong Ren [rendong@mail.cnu.edu.cn] and YunZhi Yao [yunzhi@cnu.edu.cn], College of Life Sciences, Capital Normal University, Xisanhuanbeilu 105, Haidian District, Beijing 100048, PR China; XiangChuan Li [lzulixiangchuan@163.com], College of Earth Sciences and Resources & Key Laboratory of Western Mineral Resources and Geological Engineering of the Ministry of Education, Chang’an University, Xi’an 710054, PR China.相似文献
Starch grains from 31 modern samples of millets derived from the seeds of 7 species within the genus Setaria and 2 species within the genus Panicum were analyzed to determine diagnostic morphological characteristics. Ancient starch grains recovered from a sample of broomcorn millet (Panicum miliaceum) excavated from the Cishan site (10.0-7.6 cal yr BP) in the North China Plain were then subjected to the same analyses to determine the differences in morphologies, if any, between modern and ancient samples. The data indicate that morphological features, and particularly surface and fissure features, will allow for solid identifications of ancient millet starches, while size classes will be helpful, but will not be dependable taxonomic indicators. 相似文献