1995-96 - Birbal Sahni Institute of Palaeobotany

BSIP
Programme 6.4
Ohjective
Palynological investigation of the Tertiary sediments of Jaintia
and Cachar Hills
'To study morphotaxonomy
and affinity of palynofossils
To select ecologically and stratigraphically important
palynotaxa for biostratigraphic zonation, correlation and dating
To infer palaeoclimate and environment of deposition of the sediments
A poor palynoassemblage was recovered from a Disang-Barail transition section
near Harangajao. In the absence of stratigraphic marker taxa, dating oflithounits was not
possible. However, the occurrence of a good number of Striatriletes ascertains that the age
of the sediment is younger than Middle Eocene.
J.P. MandaI
Programme 6.6 Palynostratigraphy of the Tertiary sediments of Mikir and
North Cachar Hills, Assam
Ohjective To select stratigraphically and ecologically important
palynotaxa of North CachaI' Hills
To study ultrastructure of important palynofossils to trace
their relation with pollen of extant taxa
To reconstruct the environment of deposition and
palaeoclimate during sedimentation
The rock samples collected for palynological study from Bara Langpher River
section and Lumding-Haflong Road sections were macerated and prepared the slides of
productive samples and scanned them. The photography uf selected spores-pollen taxa was
done. The palynoflora recovered from these samples are-Polypodiaceaesporites sp.,
Parmathyrites indicus, Phragmothyrites sp., Frasnacritetrus sp., Polypodiisporites
repandus, Pteridacidites meghalayensis, Striatriletes spp., Dictyophyllidites sp., Operculosculptites
sp., Pi/1uspollenites crestus, Tricolporopollis n,bra, etc. and some Permian
bisaeeate grains. Some angiosperm pollen are tagged with similar modern taxa to deduce
the habitat of fossil palynotaxa.
Madhav Kumar
Programme 6.7 Palynostratigraphy of Harail sediments in Upper Assam
Objective
To study Barail sediments in order to know their lithic characters,
nature of contact and palynofbssil content
To study morphotaxonomy of the palynofossils
To establish palynological zonation in the entire Baroil
sedimentary succession
To study the botanical affinity of various spore-pollen taxa
The spores-pollen from Namehik River section, Changlang District, Arunachal
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