Numerical taxonomy of Palaeocarya (Juglandaceae) from the Mangbang Formation of West Yunnan, China |
| |
Authors: | Sanping Xie Bainian Sun David L. Dilcher Jingyu Wu Zhicheng Lin |
| |
Affiliation: | a Key Laboratory of Western China's Environmental Systems (Ministry of Education), Lanzhou University, Lanzhou, Gansu 730000, Chinab College of Earth and Environment Sciences, Lanzhou University, Lanzhou, Gansu 730000, Chinac Department of Biology, Indiana University, Bloomington, IN 47405, USA |
| |
Abstract: | Specimens of Palaeocarya (Juglandaceae) were collected from the upper Pliocene of western Yunnan Province, which is a new geographical and age range record of engelhardioid winged fruits in China. A numerical taxonomic investigation based on 14 morphological characters of fossil and extant specimens of engelhardioid winged fruits in China was conducted using multivariate methods. Phenetic clustering shows that there are four morphotypical groups which we assign to four species. Two groups are assigned to the previously described fossil species, Palaeocarya guangxiensis Li Hao-Min et Chen Yun-Fa, 2003 and Palaeocarya koreanica (Oishi) Manchester, 1987. Two new species are recognized, Palaeocarya yunnanensis and Palaeocarya longialata. These Neogene Engelhardieae fruits provide fossil data for understanding the origin and evolution of the Engelhardia species that now inhabit South China. |
| |
Keywords: | Palaeocarya Neogene principle coordinate analysis cluster analysis Yunnan Mangbang Formation |
本文献已被 ScienceDirect 等数据库收录! |
|