Study on plant fossils from the Siwalik sediments of Far Western Nepal

M. Prasad; U.M.S. Pradhan

doi:10.54991/jop.1998.1277

Authors

M. Prasad Birbal Sahni Institute of Palaeobotany, 53, University Road, Lucknow 226007, India
U.M.S. Pradhan Petroleum Exploration Promotion Project, Department of Mines and Geology, Kathmandu, Nepal

DOI:

https://doi.org/10.54991/jop.1998.1277

Keywords:

Plant megafossils, Angiosperms, Leaf-impressions, Siwalik, Far Western Nepal

Abstract

Study on the plant megafossils comprising well preserved leaves from the Siwalik sediments of Bardiya and Surkhet area in the Himalayan foot-hills of Far Western Nepal has been done. The leaf-impressions described here represent the first collection from the Siwalik sediments of Babai and Surkhet valleys. The leaves show closest affinity with six extant taxa belonging to the families Poaceae, Dipterocarpaceae, Ampelidaceae, Myrsinaceae and Ebenaceae. The present day distribution of their modern equivalent taxa indicates a phytogeographical link between Nepal and the South East Asian countries during the Siwalik Period. The physiognomic characters of the fossil leaves and the habit and habitat of the extant comparable taxa suggest that a warm humid climate with plenty of rainfall prevailed in this region during the deposition of Siwalik sediments.

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References

Antal JS & Awasthi N 1993. Fossil flora from the Himalayan foot- hills of Darjeeling District, West Bengal and its palaeoecological and phytogeographical significance. Palaeobotanist 42(1): 14-60.

Antal JS & Prasad M 1996a. Some more leaf-impressions from the Himalayan foot-hills of Darjeeling District, West Bengal, India. Palaeobotanist 43(2): 1-9.

Antal JS & Prasad M 1996b. Dipterocarpaceous fossil leaves from Ghish River section in Himalayan foot-hills near Oodlabari, Darjeeling District, West Bengal. Palaeobotanist 43(3): 73-77.

Antal JS & Prasad M 1996c. Leaf-impressions of Polyalthia Bl. in the Siwalik sediments of Darjeeling District, West Bengal. Geophytology 26(1): 125-127.

Antal JS & Prasad M 1997. Angiospermous fossil leaves from the Siwalik sediments (Middle Miocene) of Darjeeling District, West Bengal. Palaeobotanist 46(3): 95-104.

Awasthi N & Lakhanpal RN 1990. Additions to the Neogene florule from near Bhikhnathoree, West Champaran District, Bihar. Palaeobotanist 37: 278-283.

Awasthi N & Panjwani M 1984. Studies on some more carbonised woods from the Neogene of Kerala Coast, India. Palaeobotanist 32(3): 326-336.

Awasthi N & Prasad M 1990. Siwalik plant fossils from Surai Khola area, western Nepal. Palaeobotanist 38: 298-318.

Brandis D 1971. The Indian trees. Bishen Singh Mahendra Pal Singh, Dehradun.

Desch HF 1957. Manual of Malayan timbers. Malayan Forest Record 15: 1-328.

Hooker JD 1872. The flora of British India-I. Kent.

Hooker JD 1882. The flora of British India-III. Kent.

Lakhanpal RN & Guleria JS 1987. Fossil leaves of Dipterocarpus from the Lower Siwalik beds near Jawalamukhi, Himachal Pradesh. Palaeobotanist 35(3): 258-262.

LaMotte RS 1952. Catalogue of the Cenozoic plants of North America through 1950. Mem. geol. Soc. Iner. 51: 1-381.

Pradhan UMS & Karki PB 1977. Stratigraphy of Chisapani-Surkhet area and its correlation, far western Nepal. DMG, KTM, Nepal (unpublished).

Prakash U& Dayal R 1964. Fossil woods resembling Elvo carpus and Leea from the Deccan intertrappean beds of Maharzari near Nagpur, India. Palaeobotanist 12(2): 121-127.

Prasad M 1987. Studies on plant fossils from the Siwalik Group. Unpublished Ph.D. Thesis, Lucknow University, Lucknow.

Prasad M 1990a. Fossil flora from the Siwalik sediments of Koilabas, Nepal. Geophytology 19(1): 79-105.

Prasad M 1990b. Some more leaf-impressions from the Siwalik sediments of Koilabas, Nepal. Palaeobotanist 37(3): 299-305.

Prasad M 1993. Siwalik (Middle Miocene) woods from the Kalagarh area in the Himalayan foot-hills and their bearing on palaeoclimate and phytogeography. Rev. Palaeobot. Palynol. 76: 49-82.

Prasad M 1994a. Plant megafossils from the Siwalik sediments of Koilabas, central Himalaya, Nepal and their impact on palaeoenvironment. Palaeobotanist 42(2): 126-156.

Prasad M 1994b. Siwalik (Middle Miocene) leaf-impressions from the foot-hills of Himalaya, India. Tertiary Res. 15(2):53-90.

Prasad M 1994c. Morphotaxonomical study on angiospermous plant remains from the foot-hills of Kathgodam, north India. Phytomorphology 44(1 & 2): 115-126.

Prasad M & Awasthi N 1996. Contribution to the Siwalik flora from Surai Khola sequence, western Nepal and its palaeoecological and phytogeographical implications. Palaeobotanist 43(3): 1-42.

Prasad M, Antal JS & Tiwari VD 1997a. Investigation on plant fossils from Seria Naka in the Himalayan foot-hills of Uttar Pradesh, India. Palaeobotanist 43(3): 13-30.

Prasad M, Pradhan UMS & Shyam KC 1997b. Fossil wood of Duabanga from the Siwaliks of Sindhuli area, eastern Nepal. J. Nepal geol. Soc. 15: 39-43.

Prasad M & Prakash U 1984. Leaf-impressions from the Lower Siwalik beds of Koilabas, Nepal. Proc. V Indian geophytol. Conf., Lucknow (1983), Spl. Publ.: 246-256.

Shete RH & Kulkarni AR 1982. Contribution of the dicotyledonous woods of the Deccan Intertrappean (Early Tertiary) beds, Wardha District, Maharashtra, India. Palaeontographica 183B: 57-81.

TCPIT (The Chinese Petroleum Investigation Team) 1973. Report on the investigation of petroleum geology in the kingdom of Nepal (Unpublished).

Trivedi TK & Panchabhai A 1978. Leeoxylon mohgaoensis sp. nov. from the Deccan Intertrappean exposure of Mohgaon Kalan, India. Proc. 65th Indian Sci. Congr., Ahmedabad (Abstract): 74-75.

Velenovsky J 1884. Die flora fer Bohemischen Kreide Formation. Beitr. Palaont. Geol. Ost. Ung. 3(1): 49-61.

Velenovsky J 1889. Kvetenaceskeha Cenomanu. Rozpr. Mat. Perir. K. Ceske Spol. Nauk. 3: 1-75.