International Peer-Reviewed Journal•Open Access•ISSN 2456-8880
irejournals@gmail.com•+91-7433024337

Home / Current Issue / Paper 1701279

1701279 Vol 2 · Issue 12 Download Paper

Leaf impressions of Calophyllum siwalicus and Kayea miofloribunda (Clusiaceae) from the Siwalik Bed of Bhutan

Niti Srivastava Rajiv Ranjan

Subject area: Science,Engineering and Technology  ·  Area of research: Botany

Abstract

The fossil i.e. Leaves impression of Calophyllum siwalicus and Kayea miofloribunda (Clusiaceae) were collected from the Siwalik Sediments (Formation-II) near Darranga and Lakshmi river section in Bhutan for detailed systemic study. These fossil leaves have been identified with modern angiospermous taxa up to specific level. The habit, habitat and present day distribution of the comparable extant taxa indicates the existence of tropical to sub-tropical evergreen to semi evergreen forest with humid climate in the area during the deposition of the Siwalik sediments.

Keywords

Fossils, Leaf impression, Siwalik period

References

[1] Banerjee,M and Dasgupta,G. (1984). Angiosperm leaf remains from the Siwalik Sediments (MioPliocene) of Bhutan. Eastern Himalaya. Proc. Evolution Bot. Biostr. Sharma, Mitra and Banerjee, eds. University of Calcutta:129-143.

[2] Chowdhury, K.A. and Ghoshss, (1946). On the anatomy of Cynometroxylon indicumgen. Et. sp. nov., a Fossil dicotyledonous wood from Nailotung Assam. Proc. Natn. Ist. Sci. India. 12(8): 435-447.

[3] Dilcher, D.L. (1974). Apporaches to identification of angiosperm leaf remains. The Botanical Review.40(1):1-157.

[4] Ganseer, A. (1983). Geology of Bhutan Himalay. Birkhanser. Verlag Basel, Switzerland.

[5] Hooker, J.D. (1875). The Flora of British India.2. London.

[6] Janghangi, B.S. (1974). Stratigraphy and Techonics of part of Eastern Bhutan, Himalayan, Geology.4:117-136.

[7] Pearson, R.S. and Brown, H.P. (1932). Commercial Timber of India I. Govt. India Cent. Publ., Branch Calcutta.

[8] Prakash,U. and Tripathi,P.P. (1992). Floral evolution and climatic changes during the Siwalik period. Biol.Men.18(1&2):57-68.

[9] Prasad,M and Awasthi, N.(1996). Contribution to the Siwalik flora from Surari Khola sequence, Western Nepal and its Palaeoeoecological and phytogeographical implications. Palaeobotanist, 42(3):1-42.

[10] Prasad, M., Antal, J.S., Tripathi, P.P. and Pandey, V.K. (1999). Further contributions to the Siwalik flora from the Koilabas area, Western Nepal, Palaeobotanist, 48:49-95.

[11] Prasad,M. and Tripathi, P.P. (2000). Plant megafossils from the Siwalik sediments of Bhutan and their Climatic Significance. Pro.Biol.Memoris. 26(1):1-19.

[12] Valdiya, K.S., (2002). Emergence and evolution of Himalaya: reconstructing history in the light of recent studies. Progress in Physical Geography, v. 26(3), pp. 360-399.

[13] Willis, J.C. (1966). A dictionary of the flowering plants and ferns (8th ediation) Cambridge Uni.Press, Cambridge.

How to cite this paper

Niti Srivastava, Rajiv Ranjan "Leaf impressions of Calophyllum siwalicus and Kayea miofloribunda (Clusiaceae) from the Siwalik Bed of Bhutan" Iconic Research And Engineering Journals Volume 2 Issue 12 2019 Page 229-232
Niti Srivastava, Rajiv Ranjan "Leaf impressions of Calophyllum siwalicus and Kayea miofloribunda (Clusiaceae) from the Siwalik Bed of Bhutan" Iconic Research And Engineering Journals, vol. 2, no. 12, Jun. 2019
Niti Srivastava, Rajiv Ranjan (2019). Leaf impressions of Calophyllum siwalicus and Kayea miofloribunda (Clusiaceae) from the Siwalik Bed of Bhutan. Iconic Research And Engineering Journals, 2(12).
Niti Srivastava, Rajiv Ranjan "Leaf impressions of Calophyllum siwalicus and Kayea miofloribunda (Clusiaceae) from the Siwalik Bed of Bhutan" Iconic Research And Engineering Journals, vol. 2, no. 12, Jun. 2019.
@article{1701279,
      author = {Niti Srivastava, Rajiv Ranjan},
      title = {Leaf impressions of Calophyllum siwalicus and Kayea miofloribunda (Clusiaceae) from the Siwalik Bed of Bhutan},
      journal = {Iconic Research And Engineering Journals},
      year = {2019},
      volume = {2},
      number = {12},
      pages = {229-232},
      issn = {2456-8880},
      url = {https://www.irejournals.com/formatedpaper/1701279.pdf},
      abstract = {The fossil i.e. Leaves impression of Calophyllum siwalicus and Kayea miofloribunda (Clusiaceae) were collected from the Siwalik Sediments (Formation-II) near Darranga and Lakshmi river section in Bhutan for detailed systemic study. These fossil leaves have been identified with modern angiospermous taxa up to specific level. The habit, habitat and present day distribution of the comparable extant taxa indicates the existence of tropical to sub-tropical evergreen to semi evergreen forest with humid climate in the area during the deposition of the Siwalik sediments.},
      keywords = {Fossils, Leaf impression, Siwalik period},
      month = {June},
  }