[an error occurred while processing this directive] Global Geology 2013, 16(2) 59-67 DOI:     ISSN: 1673-9736 CN: 22-1371/P

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ZHAO Guowei1
2
PubMed
Article by Zhao G
Article by 2
 
ZHAO Guowei1, 2
 
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Some conifers from Aptian in Yanbian area of Jilin,Northeast China
ZHAO Guowei1, 2
1. Research Center of Paleontology and Stratigraphy,Jilin University,Changchun 130026,China; 2. College of Earth Sciences,Jilin University,Changchun 130061,China; 3. Key Laboratory for Evolution of Past Life and Environment in Northeast Asia,Ministry of Education ( Jilin University) , Changchun 130026,China; 4. International Center for Geoscience Research and Education in Northeast Asia,Jilin University,Changchun 130026,China
Abstract:

Some well-preserved conifer leafy shoots and female cones from the Lower Cretaceous Changcai Formation near Fudong of Helong,eastern Jilin,Northeast China are studied. Based on gross morphological and cuticular study,a new species,Elatides helongensis Sun et Zhao ( sp. nov. ) is described systematically. The new species is characterized by persistent,linear or slightly falcate leaves with obtusely acute apex,attached helically on the shoots. Female cones of the new species are terminal and oval,composed of persistent helicallyarranged rhomboidal scales and erect seeds. One erect seed is growing on each scale. Leaf cuticles are hypostomatic. Monocylic stomata are ellipse,composed of 2 sunken guard cells and 4--8 subsidiary cells. Moreover, the cuticles of a young female cone of Pityostrobus yingchengensis Yang are described for the first time.

Keywords: Elatides   Pityostrobus   cuticle   Cretaceous   Changcai Formation  
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