CATHAYSIODENDRON YANGSHANENSE SP. NOV. FROM THE EARLY CARBONIFEROUS YANGSHAN FORMATION OF GUSHI,HENAN
CATHAYSIODENDRON YANGSHANENSE SP. NOV. FROM THE EARLY CARBONIFEROUS YANGSHAN FORMATION OF GUSHI,HENAN
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发表时间：
2006
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通讯作者：
W. Jun
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作者：
W. Jun
描述河南固始杨山煤矿下石炭统杨山组的一个华夏木新种Cathaysiodendronyangshanensesp.该属的主要特征是：叶垫被隆起的条隔开，呈锯齿状;叶痕的形状和大小与叶垫几乎相同，在叶痕的中间有3个瘢痕。该属在华北晚石炭世至二叠纪（太原组和山西组）和华南晚二叠世（龙潭组）已有记录（Lee，1980）。最近，我们在河南固始早石炭世（阳山组）采集了一批标本进行鉴定，其中有两个代表Cathaysiodendron属的一个新种。这是继Wang和Wu（2004）报道的甘肃靖远早石炭世臭牛沟组华夏木属（Cathaysiodendron）化石之后，又一个新发现的华夏木属化石。鉴于Cathaysiodendron在华夏植物群中的重要性，我们特别报道了它在早石炭世的出现。标本采自河南固始阳山煤矿，编号YS-18、19。
The genus Cathaysiodendron was proposed by Lee (1963). The chief characteristics of the genus are: leaf cushions separated by elevated strips which show more or less a zigzag appearance; leaf scars being almost the same shape and size as the cushions, with three cicatricules situated in the middle of the scar. The genus has been previously recorded from the late Carboniferous to Permian (Taiyuan and Shanxi formations) in North China, and the Late Permian (Longtan Formation) in south China (Lee, 1980). Recently we have received a number of specimens from the Early Carboniferous(the Yangshan Formation) of Gushi, Henan for identification, among which there are two representing a new species of Cathaysiodendron. This represents a new discovery of Cathaysiodendron from the Early Carboniferous in addition to Wang and Wu (2004) reporting Cathaysiodendron from the Early Carboniferous Chouniugou Formation in Jingyuan, Gansu. Considering the significance of Cathaysiodendron in the Cathaysian flora, we particularly report its occurrence from the Early Carboniferous. The figured specimens were collected from the Yangshan Coal Mine, Gushi, Henan Province, with catalogue number: YS-18, 19.