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首页> 外文期刊>Geophytology: a journal of palaeobotany and allied sciences >Two new fossil leaf species, Fissistigma himachalensis (family: Annonaceae) and Berberis siwalika (family: Berberidaceae), from Middle Siwalik of Sarkaghat,Himachal Pradesh, India
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Two new fossil leaf species, Fissistigma himachalensis (family: Annonaceae) and Berberis siwalika (family: Berberidaceae), from Middle Siwalik of Sarkaghat,Himachal Pradesh, India

机译：Two new fossil leaf species, Fissistigma himachalensis (family: Annonaceae) and Berberis siwalika (family: Berberidaceae), from Middle Siwalik of Sarkaghat,Himachal Pradesh, India

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Morphotaxonomical study on the fossil leaves collected from Siwalik sediments of Sarkaghat, Himachal Pradesh, India revealed the occurrence of two new fossil species, Fissistigma himachalensis and Berberis siwalika belonging to the families, Annonaceae and Berberidaceae. The analysis of present day distribution of the comparable species, Fissistigma rubiginosum (A.DC.) Merr. and Berberis manipurana Ahrendt of the fossils suggests that they do not grow in and around the study area as well as sub-Himalayan zone of Himachal Pradesh but are presently distributed in the evergreen forests of north-east India and south-east Asian region. This suggests that after Miocene these taxa could not survive there and migrated towards north-east and south-east region. Based on the data available the palaeoclimatic and phytogeographical aspect of both the taxa has been discussed.

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