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Global Geology 2014, 17(2) 67-77 DOI:
ISSN: 1673-9736 CN: 22-1371/P |
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Lopingian mixed floras from Linxi Formation in Soron area�� Inner Mongolia |
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ZHANG Dejun, SUN Yuewu, DING Haisheng, YANG Zhenyuan and TANG Lijing |
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1�� ��esearch Center of Paleontology �� Stratigraphy��Jilin University��Changchun 130026��China; 2�� College of Earth Sciences��Jilin University��Changchun 130061��China; 3�� Key Lab for Evolution of Past Life and Environment in Northeast Asia��Ministry of Education (Jilin University)�� Changchun 130026��China |
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Abstract��
A lot of well-preserved plants from the Linxi Formation are collected in the Soron area��Inner Mongo- lia��consisting of 34 species of 16 genera�� They are Late Permian in age�� The flora is characterized by a lot of Angaran plants��such as Paracalamites��Comia����hachiphyllum��Iniopteris����ufloria��etc�� Some Cathaysian ele- ments��such as Lobatannularia lingulata��L�� multifolia��Fascipteris Cathaysiantus��F�� densata��Taeniopteris szei��Cladophlebis liulinensis and C�� permica��are also mixed within the present flora�� This indicates that the So- ron of Inner Mongolia was located in the sector between the Angaran and Cathysian floristic provinces in Loping- ian�� It is beneficial for depicting the location and the evolution of the Solenker--Xar Moron suture zone in the phytogeographic view�� The transmigration of tropical and subtropical Cathaysian plants to the north indicates that the Paleoasian Ocean was closed during the late Permian along the suture zone�� |
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Keywords��
Permian
Angaran flora
Cathaysian flora
Solenker--Xar Moron suture zone
Jiamusi-Mongolia Block
North China Plate
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Received Revised Online: |
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