1995-96 - Birbal Sahni Institute of Palaeobotany

BSIP
Detailed morphotaxonomic study on certain bisaccatc pollcn taxa from Euromerian
and Indian Gondwana has been completed. It signifies the importance of exine structures in
the identity of forms among the apparently similar looking forms. Based on exine-structure
on body surbce, the so far Indian Gondwana bisaccate pollen described as Lllnatisporite.l'.
Lllccldsporites and Klall.',,'ipolleniles have been given new names, i.e .. ArcuGtipo/lenites,
Dicappipolleniles and Krempipollenites, respectively. Besides. some of the pollen-spore
taxa have also been conunented upon, based on their type specimens. such as Hexasaccites.
('rucisacciles, SulcalispollI".\·. Crescentipo//eniles, etc.
R.S. Tiwari & Vijaya
Programme 2.7 Composition, relationship and age of the megafossil flora of
Rajmahal Formation
Objective To stlldy morphotaxonomy of fossils collected ./i'om variolls
inlertrappean beds
To work 0111 composition offlora in order to arrange different
plant bed,' in a chronological sequence and to correlate with
other coeval floras
7" reconstruct whole plant based on comparative studies ofdiF
ferent plant organs
Morphotaxonomic investigation of Murlipahar assemblage has been carried out.
The megaflora I assemblage comprises ten genera, viz., Cladophlebis, Mllrlipaharopteris
gen. nov., I'hy//opteroides, Coniopteris. Thinnfeldia, Otozamites, Ptilophylillm, Toeniopteris,
1,latoe/adlls and DesmiophY//llm. On the basis of floral assemblage composition and the
presence of "I'hyllopteroides laevis "-an index Neocomian species of Eastern Australia.
i\I/fI'IIj}(l/Hlmpfe}"i.\' imlica g~n t;t sp. nO\'.~L slerih: !"rnmL 2. tCrtilt: frond from Murlipahllf. RaJll1ahal
1\]11". nihar (X 4)