Purushottam Adhikari, Harshita Bhatia, Dhan Bahadur Khatri, Sadananda, G. Srivastava, R. Mehrotra, K. Paudayal
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引用次数: 0
摘要
西瓦利克植物区系对于了解喜马拉雅山的造山运动及其引起的气候变化非常重要。虽然尼泊尔喜马拉雅山脉东部锡瓦里克地区的化石记录稀少,但我们报告了尼泊尔东部中锡瓦里克(上新世-下新世)沉积物中的一株叶印/压缩榕化石(Ficus precunea Lakhanpal)。其特征性的叶脉图案和形态细节表明,它与现生种 F. semicordata Buch.-Ham.化石群表明该地区在沉积时期存在季节性森林。
Fig leaf from the Middle Siwalik sediments of eastern Nepal with implication on biogeography and palaeoclimate
The Siwalik flora is important in understanding the orogeny of the Himalayas and the resulting climate change. Though the fossil records from the eastern Himalayan Siwalik of Nepal are sparse, we report a fossil leaf impression/ compression of Ficus precunea Lakhanpal from the Middle Siwalik (upper Miocene–lower Pliocene) sediments of eastern Nepal. The characteristic leaf venation pattern and morphological details suggest its strong affinity with the extant species of F. semicordata Buch.-Ham. ex Sm. The fossil assemblage indicates the presence of seasonal forests during the depositional period in the region.
期刊介绍:
The journal is devoted to the publication of original papers and review articles dealing with all aspects of Paleontology, Paleobotany, Stratigraphy, Geochronology, Anthropology and Pre-history.