1996-97 - Birbal Sahni Institute of Palaeobotany

BSIP
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A new tetrad pollen from Narcdi
Formation. Early Eocene, Kutch.
B.D. Mandaokar
About 40 samples from bore-hole K-15, drilled by Central Ground Water Board
in Tupni area of Jamnagar District were studied. A poor palynoassemblage comprising
bisaccate pollen grains (? Podocarpidites) could be recovered, which does not permit
definite age assignment.
Outcrop samples (40) were collected from Bet Shankhodar, Gujarat.
Palynologically all the samples proved barren. except some samples which have yielded
foraminifera and dinoflagellate cysts.
Visited Dwarka, Sasangir, Jamnagar, Somnath and Harshad in Gujarat to collect
rock samples for palynological studies.
Programme 3.11: Palynological investigation of the Tertiary formations of
Rajasthan (other than Kapurdi area)
K. Ambwani
Samples from bore-hole RGBH-33!l4, drilled near Raneri Village, Bikaner
District yielded rich and varied spores and pollen assemblage. Association of
Lycopodiumsporites, Proxapertites, Spinizonocolpites, Lakiapollis,
Matanomadhiasulcites as well as Retitribrevicolporites along with Dandotiaspora (D.
dilata) in the assemblage indicates a Late Palaeocene age for the sediments.
A new genus Clavadiporopollenites raneriensis was instituted while studying
the palynoassemblage. The affinities of this pollen grain could not be traced out with
the modern counterpart. However, its typical exine morphology with peculiar fingerlike
processes around the pores signifies an important evolutionary trend in the plant
communities during Early Tertiary Period.
Visited Raneri, Gadala and Bethnok localities ofBikaner District for collection
of Tertiary rock samples.
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