1994-95 - Birbal Sahni Institute of Palaeobotany

BSIP
To palynologically differentiate Langpar (Early Palaeocene),
Langpar-Lakadong (Middle Palaeocene), Lakadong­
Umalatodoh-Prang (Early-Middle Eocene), Prang-Kopili (Lale
Eocene) and Kopili-Barail (Early Oligocene) sediments
To correlate the Therriaghm
and Caro Hills
assemblages with Ihose of Jaintia
The Late Cretaceous and Tertiary palynological assemblages recovered from
Then'iaghat and other localities were divided into several phytogeoprovinces and cenozones.
The Senonian palynoflora oflndia were clubbed with Brazil and West African palynofloras
as Constanlinisporis phytoprovince characterized by the presence of Constanlinisporis,
Victorisporis and Andreisporis. The Danian to Middle Eocene palynofloras of India were
placed under pantropical Proxaperlites operculalus zone and this was further subdivided
into Acroslichumsporiles meghalayensis subzone, Dandoliaspora dilma subzone,
Kielmeyerapolleniles syncolporatus subzone, Lakiapollis ovatus subzone, Tricolporopililes
robustus subzone and Pellicieroipollis langenheimii subzone. The Oligocene and Miocene
palynofloras were placed under pantropical Slrialriletes susannae zone and were divided
into Trisyncolpites ramanujamii subzone and Hibisceaepolleniles robuslispinosus subzone.
A comparison of Borneo, Caribbean and Atlantic Tertiary palynological assemblages with
India reveals that the transatlantic palynological assemblages show closer similarity.
R.K. Kar
Important palynotaxa recovered from Bapung, Mukshay, Thangskai and Waliyncott
of Meghalaya are: Cyathidites minor, Dandotiaspora dilma, D. telonala, D. plicala,
Lycopodiumsporites speciosus, L. umstwensis, Polypodiisporiles repandus, Neocouperipollis
kulchensis, N. wodehousei, Malanomadhiasulciles maximus, M. kutchensis,
Spinizonocolpites echinatus, Proxapertiles microreliculatus, P assamicus, Lakiapollis ovalUS,
Relilribrevicolporites matanomadhensis, Triangulorites bellus, Trilatiporiles kutchensis,
etc. The assemblage indicates a Late Palaeocene age for the sediments.
Manisha Nanda & R.K. Kar
Spores and pollen recovered from Bhalu KUlUg, Meghalaya were photographed.
The assemblage is dominated by the various species of Lycopodiumsporites, Dandotiaspora,
Malanomadhiasulciles, Proxaperlites, Neocouperipollis, Spinizonocolpites, Tripilaoriles,
Trianguloriles and Kielmeyerapollenites. The assemblage indicates a Late Palaeocene age.
R.K. Kar & M. Chakraborty
(Part-time Ph.D. work)
Programme 6,3
Objeclive
Palynostratigraphy of Thra Formation (Palaeocene), Garo
Hills, Meghalaya
To establish significance of the palynoflora in biostratigraphic
zonation, correlation and dating
To study palynofloras
recovered from selected sections in or-
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