The publication unit can trace its origin to publication of 'Palaeobotany in India' in the year 1932 by Professor Birbal Sahni as a prelude to publication of a regular science Journal on palaeobotany. The journal was renamed "The Palaeobotanist". The first volume of Institute's journal dedicated to Prof. Sahni, appeared in 1952 as Birbal Sahni memorial volume. From time to time the Institute has also brought out special publications including memorial lectures, books, monographs, catalogues, atlases, annotated synopses, proceedings of international conferences, special publications, annual reports and news letters.