Abstract

Global Geology 2013, 16(2) 59-67 DOI: ISSN: 1673-9736 CN: 22-1371/P

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	Keywords
	Elatides
	Pityostrobus
	cuticle
	Cretaceous
	Changcai Formation
	Authors
	ZHAO Guowei1
	2
	PubMed
	Article by ZHAO Guowei1
	Article by 2

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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