【摘要】 <正> 本文研究的被子植物化石系由中国第二次南极考察队的成员、本文作者之一,宋德康采集.这些化石的产地位于乔治王岛的菲尔德斯半岛,南极中国长城站西北1.5km处的化石山(插图1),产在一套火山岩系的沉积岩夹层中.菲尔德斯半岛大部分地区为海蚀地貌,其次为构造剥蚀地貌.化石山处在构造剥蚀地带,呈雪原及冰缘的冰冻剥蚀地貌.暖季化石山积雪大部分溶化,表面堆积着10余厘米灰褐色风化碎石及砂土,其下为40-50cm厚的片更多还原

【Abstract】 The present fossil remians of angiosperms were collected by Song De-kang, member of the 2nd Chinese Antarctic Expedition, from an outcrop 1.5km north of the Great Wall Station of China on the Fildes Peninsula, King George Island (South Shelland Islands, Antarctica). The fossil plants consisting of several imprints of dicotyledonous leaves and some leaf fragments were obtained from the pyroclastic rock, interbedded in a predominantly volcanic succession. The leaves are poorly preserved with their margins almost all damaged. Because of poor preservation and inadequacy of specimens it is difficult to determine the systematic position of the plants, which have to be tentatively included in the form genus Dicotylophyllum. The present fossil plants differ from those of the Late Oligocene flora from Point Hennequin, King George Island (Zastawniak, 1985) in their components and physiognomic characters of leaves, and they are somewhat older than that flora, probably of Eocene in age. Description of new species Dicotylophyllum corifolium Li sp. nov. (Pl. I, figs. 2, 2a, 3; Textfigs. 2, 3) Leaves lanceolate, more than 8cm long and about 3cm wide, with apical part unpreserved; leaf base cuneate-rounded; margin probably entire; petiole unpreserved; leaf venation pinnatebrochidodromous; midvein stout, slightly curved; secondaries thin, joining superadjacent ones at acute angle and leaving the midvein at angles of about 70° except the first pair near the base, diverging at 40°; tertiary veins orthogonal reticulate (see Text-fig. 3); texture coriaceous. In leaf morphology this species is similar to some representatives of Proteaceae. However, its precise determination must await further work and in particular a better collection.更多还原