Studies on Structures of Several Early Cretaceous Fossil Conifers in Fuxin, 
Liaoning Province and Its Geological Significance

Abstract

Abstract:

The conifer fossils, Cephalotaxopsis haizhouensis Shang, Elatocladus cf. dunnii Miller et Lapasha and Elatides harrisii
Chow, were collected from the Lower Cretaceous Fuxin Formation of the Fuxin Basin, Liaoning Province. Studies on the epidermal
structures of these three species were carried out, and the epidermal structure characteristics of Cephalotaxopsis haizhouensis
and Elatocladus cf. dunnii account for a warm and humid environmental condition. Based on the more complete cuticle and
clearer stomatal bands structures, the analysis and comparison of epidermal structures between extant and fossil plants show that
Cephalotaxus sinensis and Cephalotaxus fortunei can be the nearest living equivalent species to Cephalotaxopsis haizhouensis and
Elatocladus cf. dunnii. The Early Cretaceous CO2 concentration of the Fuxin Basin was quantitatively reconstructed based on the
analysis of these two fossil species and their living equivalent species.

Key words: fossil conifers, microstructure, Early Cretaceous, palaeoclimate, Fuxin, Liaoning Province

CLC Number:

Q914.2

DU Bao-Xia, YAN De-Fei, SUN Bai-Nian, DENG SHeng-Hui, XIE San-Ping, WEN Wen-Wen. Studies on Structures of Several Early Cretaceous Fossil Conifers in Fuxin,
Liaoning Province and Its Geological Significance[J]. J4, 2010, 16(3): 327-338.

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