Occurrence of <i>Persea</i> Mill. from the Siwalik forest of Darjeeling, eastern Himalaya: Paleoclimatic and paleogeographic implications

Mahasin Ali Khan; Subir Bera

doi:10.1007/s12583-016-0902-2

Volume 27 Issue 5

Sep 2016

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Journal of Earth Science > 2016 > 27(5): 883-890.

Mahasin Ali Khan, Subir Bera. Occurrence of Persea Mill. from the Siwalik forest of Darjeeling, eastern Himalaya: Paleoclimatic and paleogeographic implications. Journal of Earth Science, 2016, 27(5): 883-890. doi: 10.1007/s12583-016-0902-2

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Mahasin Ali Khan, Subir Bera. Occurrence of Persea Mill. from the Siwalik forest of Darjeeling, eastern Himalaya: Paleoclimatic and paleogeographic implications. Journal of Earth Science, 2016, 27(5): 883-890. doi: 10.1007/s12583-016-0902-2

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Occurrence of Persea Mill. from the Siwalik forest of Darjeeling, eastern Himalaya: Paleoclimatic and paleogeographic implications

doi: 10.1007/s12583-016-0902-2

Mahasin Ali Khan^{1, 2},
Subir Bera^{1
,
,}

1.
Centre of Advanced Study, Department of Botany, University of Calcutta, Kolkata, 700019, India
2.
Department of Botany, Sidho-Kanho-Birsha University, Purulia, 723104, India

More Information

Corresponding author: Subir Bera, berasubir@yahoo.co.in
Received Date: 24 Oct 2014
Accepted Date: 11 Sep 2015
Publish Date: 01 Oct 2016

Abstract

Abstract

Fossil leaf remains of two new species of Persea Mill., belonging to the family Lauraceae collected from the lower part of the Siwalik sediments (Gish Clay Formation of Sevok Group, Middle Miocene) of Darjeeling foothills of eastern Himalaya, are described. The new species arePersea miogamblei sp. nov. and Persea neovillosa sp. nov.. On the basis of leaf architecture (size, shape and venation pattern) fossil leaves described in this article closely resemble modern leaves of Persea gamblei (King ex Hook. f.) Kosterm. and Persea villosa (Roxb.) Kosterm.. The geographic distribution of the fossils and their modern counterparts are discussed and on that basis tropical evergreen vegetation with a warm and humid climate at the time of deposition of the Siwalik sediments is suggested in contrast to the present day tropical deciduous vegetation in this area. The present finding also suggests probable migration of these lauraceous taxa to Southeast Asia.
- Persea,
- fossil leaves,
- Middle Miocene,
- Siwalik,
- paleoclimate,
- Darjeeling

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References(35)

References

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Occurrence of Persea Mill. from the Siwalik forest of Darjeeling, eastern Himalaya: Paleoclimatic and paleogeographic implications

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Occurrence of Persea Mill. from the Siwalik forest of Darjeeling, eastern Himalaya: Paleoclimatic and paleogeographic implications

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