Early Norian flora from Partizansk River Basin of Primorye, Russia  

作　　者：Elena B Volynets Svetlana A Schorokhova Ge Sun 

机构地区：[1]Institute of Biology ＆ Soil Science, Russian Academy of Sciences, Vladivostok 690022, Russia [2]Institute of Engineering ＆ Social Ecology, Far-Eastern State Technical University, Vladivostok 690060, Russia [3]Research Center of Paleontology ＆ Stratigraphy, Jilin University, Changchun 130026, China

出　　处：《Global Geology》2006年第1期1-12,共12页世界地质（英文版）

基　　金：Supported by PP RAS Projects 06-1-P11-022 , 06-1-P18-081 , Russia ; and NSFC-RFBR Proj .30511120003 , Key Lab Modern Paleont . Stratig.(NIGPAS) Proj .903109 , China

摘　　要：An early Norian flora from the Partizansk River Basin of Primorye, Far-East of Russia, is described in detail for the first time, in which over 25 taxa are reported. The flora is dominated by cycadoalean, bennettitalean and coniferous plants, associated with a lot of ferns and czekanowskialean plants, and with a few ginkgoalean. In floristic characteristics, the flora can be well comparable with Late Triassic Mongugai flora of southwestern Primorye and its neighboring Tianqiaoling flora of eastern Jilin, China, as well with the Yamanoi and Nariwa floras from southwestern Japan. As the plant-bearing strata are sandwiched in the lower Norian marine beds yielding marine fauna, the age of the Partizansk flora is well evidenced as the early Norian. Paleophytogeographically, the flora appears to be in the ecotone of the Medio-Triassic and Arcto-Triassic floristic regions in Eurasia, and indicates probably warm temperate or subtropic vegetation in nature. Four new species are reported in this paper, including Ctenis elegantus sp. nov, Ixostrobus pacificus sp. nov., Elatocladus elegantus sp. nov. and E. prynadae sp. nov.An early Norian flora from the Partizansk River Basin of Primorye, Far-East of Russia, is described in detail for the first time, in which over 25 taxa are reported. The flora is dominated by cycadoalean, bennettitalean and coniferous plants, associated with a lot of ferns and czekanowskialean plants, and with a few ginkgoalean. In floristic characteristics, the flora can be well comparable with Late Triassic Mongugai flora of southwestern Primorye and its neighboring Tianqiaoling flora of eastern Jilin, China, as well with the Yamanoi and Nariwa floras from southwestern Japan. As the plant-bearing strata are sandwiched in the lower Norian marine beds yielding marine fauna, the age of the Partizansk flora is well evidenced as the early Norian. Paleophytogeographically, the flora appears to be in the ecotone of the Medio-Triassic and Arcto-Triassic floristic regions in Eurasia, and indicates probably warm temperate or subtropic vegetation in nature. Four new species are reported in this paper, including Ctenis elegantus sp. nov, Ixostrobus pacificus sp. nov., Elatocladus elegantus sp. nov. and E, prynadae sp. nov,

关 键 词：TRIASSIC early Norian FLORA paleophytogeography Primorye of Russia 

分 类 号：Q949[生物学—植物学]