Some conifers from Aptian in Yanbian area of Jilin,Northeast China

ZHAO Guowei1, 2

Global Geology ›› 2013, Vol. 16 ›› Issue (2) : 59-67.

PDF(3529 KB)
PDF(3529 KB)
Global Geology ›› 2013, Vol. 16 ›› Issue (2) : 59-67.
论文

Some conifers from Aptian in Yanbian area of Jilin,Northeast China

  • ZHAO Guowei1, 2
Author information +
History +

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.

Key words

Elatides / Pityostrobus / cuticle / Cretaceous / Changcai Formation

Cite this article

Download Citations
ZHAO Guowei1, 2. Some conifers from Aptian in Yanbian area of Jilin,Northeast China[J]. Global Geology. 2013, 16(2): 59-67
PDF(3529 KB)

Accesses

Citation

Detail

Sections
Recommended

/