New lauraceous species from the Siwalik forest of Arunachal Pradesh, eastern Himalaya, and their palaeoclimatic and palaeogeographic implications

Authors : Mahasin Ali KHAN, Subir BERA

Pages : 453-464

Doi:10.3906/bot-1308-35

View : 19 | Download : 9

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Leaf remains of 4 lauraceous taxa collected from the Siwalik sediments insert ignore into journalissuearticles values(Middle Miocene to Pliocene); of Arunachal Pradesh of eastern Himalaya are described in the present communication. One fossil leaf, Cinnamomum palaeobejolghota sp. nov., was recovered from the lower part of the Siwalik succession insert ignore into journalissuearticles values(Dafla Formation; Middle to Upper Miocene);, while Persea mioparviflora sp. nov., Persea preglaucescens sp. nov., and Lindera neobifaria sp. nov. were collected from the middle part of the Siwalik succession insert ignore into journalissuearticles values(Subansiri Formation; Pliocene); of Arunachal sub-Himalaya. The geographic distribution of the fossils and their modern counterparts is discussed and on that basis tropical vegetation under warm and humid climate during deposition of the Siwalik sediments is suggested. The present study also suggests probable migration of these lauraceous taxa in South-East Asia.
Keywords : Key words Fossil, lauraceous leaves, Middle Miocene Pliocene, new species, Siwalik, palaeoclimate, Arunachal Pradesh